RHSA-2011_0833
Vulnerability from csaf_redhat - Published: 2011-05-31 14:03 - Updated: 2024-11-22 05:35Summary
Red Hat Security Advisory: kernel security and bug fix update
Severity
Important
Notes
Topic: Updated kernel packages that fix multiple security issues and several bugs
are now available for Red Hat Enterprise Linux 5.
The Red Hat Security Response Team has rated this update as having
important security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.
Details: The kernel packages contain the Linux kernel, the core of any Linux
operating system.
This update fixes the following security issues:
* A flaw in the dccp_rcv_state_process() function could allow a remote
attacker to cause a denial of service, even when the socket was already
closed. (CVE-2011-1093, Important)
* Multiple buffer overflow flaws were found in the Linux kernel's
Management Module Support for Message Passing Technology (MPT) based
controllers. A local, unprivileged user could use these flaws to cause a
denial of service, an information leak, or escalate their privileges.
(CVE-2011-1494, CVE-2011-1495, Important)
* A missing validation of a null-terminated string data structure element
in the bnep_sock_ioctl() function could allow a local user to cause an
information leak or a denial of service. (CVE-2011-1079, Moderate)
* Missing error checking in the way page tables were handled in the Xen
hypervisor implementation could allow a privileged guest user to cause the
host, and the guests, to lock up. (CVE-2011-1166, Moderate)
* A flaw was found in the way the Xen hypervisor implementation checked for
the upper boundary when getting a new event channel port. A privileged
guest user could use this flaw to cause a denial of service or escalate
their privileges. (CVE-2011-1763, Moderate)
* The start_code and end_code values in "/proc/[pid]/stat" were not
protected. In certain scenarios, this flaw could be used to defeat Address
Space Layout Randomization (ASLR). (CVE-2011-0726, Low)
* A missing initialization flaw in the sco_sock_getsockopt() function could
allow a local, unprivileged user to cause an information leak.
(CVE-2011-1078, Low)
* A missing validation of a null-terminated string data structure element
in the do_replace() function could allow a local user who has the
CAP_NET_ADMIN capability to cause an information leak. (CVE-2011-1080, Low)
* A buffer overflow flaw in the DEC Alpha OSF partition implementation in
the Linux kernel could allow a local attacker to cause an information leak
by mounting a disk that contains specially-crafted partition tables.
(CVE-2011-1163, Low)
* Missing validations of null-terminated string data structure elements in
the do_replace(), compat_do_replace(), do_ipt_get_ctl(), do_ip6t_get_ctl(),
and do_arpt_get_ctl() functions could allow a local user who has the
CAP_NET_ADMIN capability to cause an information leak. (CVE-2011-1170,
CVE-2011-1171, CVE-2011-1172, Low)
* A heap overflow flaw in the Linux kernel's EFI GUID Partition Table (GPT)
implementation could allow a local attacker to cause a denial of service
by mounting a disk that contains specially-crafted partition tables.
(CVE-2011-1577, Low)
Red Hat would like to thank Dan Rosenberg for reporting CVE-2011-1494 and
CVE-2011-1495; Vasiliy Kulikov for reporting CVE-2011-1079, CVE-2011-1078,
CVE-2011-1080, CVE-2011-1170, CVE-2011-1171, and CVE-2011-1172; Kees Cook
for reporting CVE-2011-0726; and Timo Warns for reporting CVE-2011-1163
and CVE-2011-1577.
This update also fixes several bugs. Documentation for these bug fixes will
be available shortly from the Technical Notes document linked to in the
References section.
Users should upgrade to these updated packages, which contain backported
patches to correct these issues, and fix the bugs noted in the Technical
Notes. The system must be rebooted for this update to take effect.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
The do_task_stat function in fs/proc/array.c in the Linux kernel before 2.6.39-rc1 does not perform an expected uid check, which makes it easier for local users to defeat the ASLR protection mechanism by reading the start_code and end_code fields in the /proc/#####/stat file for a process executing a PIE binary.
2.1 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
The sco_sock_getsockopt_old function in net/bluetooth/sco.c in the Linux kernel before 2.6.39 does not initialize a certain structure, which allows local users to obtain potentially sensitive information from kernel stack memory via the SCO_CONNINFO option.
1.9 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
The bnep_sock_ioctl function in net/bluetooth/bnep/sock.c in the Linux kernel before 2.6.39 does not ensure that a certain device field ends with a '\0' character, which allows local users to obtain potentially sensitive information from kernel stack memory, or cause a denial of service (BUG and system crash), via a BNEPCONNADD command.
5.0 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
The do_replace function in net/bridge/netfilter/ebtables.c in the Linux kernel before 2.6.39 does not ensure that a certain name field ends with a '\0' character, which allows local users to obtain potentially sensitive information from kernel stack memory by leveraging the CAP_NET_ADMIN capability to replace a table, and then reading a modprobe command line.
1.7 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by sending a DCCP-Close packet followed by a DCCP-Reset packet.
7.8 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
Workaround
For users that do not run applications that use DCCP, you can prevent the dccp
module from being loaded by adding the following entry to the end of the
/etc/modprobe.d/blacklist file:
blacklist dccp
This way, the dccp module cannot be loaded accidentally, which may occur if an
application that requires DCCP is started. A reboot is not necessary for this
change to take effect but do make sure the module is not loaded in the first
place. You can verify that by running:
lsmod | grep dccp
You may also consider removing the CAP_SYS_MODULE capability from the current
global capability set to prevent kernel modules from being loaded or unloaded.
The CAP_SYS_MODULE has a capability number of 16 (see linux/capability.h). The
default value has all the bits set. To remove this capability, you have to
clear the 16th bit of the default 32-bit value, e.g. 0xffffff ^ (1 << 16):
echo 0xFFFEFFFF > /proc/sys/kernel/cap-bound
The osf_partition function in fs/partitions/osf.c in the Linux kernel before 2.6.38 does not properly handle an invalid number of partitions, which might allow local users to obtain potentially sensitive information from kernel heap memory via vectors related to partition-table parsing.
2.1 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service (host crash) by specifying user mode execution without user-mode pagetables.
5.5 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
net/ipv4/netfilter/arp_tables.c in the IPv4 implementation in the Linux kernel before 2.6.39 does not place the expected '\0' character at the end of string data in the values of certain structure members, which allows local users to obtain potentially sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability to issue a crafted request, and then reading the argument to the resulting modprobe process.
2.1 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
net/ipv4/netfilter/ip_tables.c in the IPv4 implementation in the Linux kernel before 2.6.39 does not place the expected '\0' character at the end of string data in the values of certain structure members, which allows local users to obtain potentially sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability to issue a crafted request, and then reading the argument to the resulting modprobe process.
2.1 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
net/ipv6/netfilter/ip6_tables.c in the IPv6 implementation in the Linux kernel before 2.6.39 does not place the expected '\0' character at the end of string data in the values of certain structure members, which allows local users to obtain potentially sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability to issue a crafted request, and then reading the argument to the resulting modprobe process.
2.1 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
Integer overflow in the _ctl_do_mpt_command function in drivers/scsi/mpt2sas/mpt2sas_ctl.c in the Linux kernel 2.6.38 and earlier might allow local users to gain privileges or cause a denial of service (memory corruption) via an ioctl call specifying a crafted value that triggers a heap-based buffer overflow.
7.2 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
drivers/scsi/mpt2sas/mpt2sas_ctl.c in the Linux kernel 2.6.38 and earlier does not validate (1) length and (2) offset values before performing memory copy operations, which might allow local users to gain privileges, cause a denial of service (memory corruption), or obtain sensitive information from kernel memory via a crafted ioctl call, related to the _ctl_do_mpt_command and _ctl_diag_read_buffer functions.
7.2 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
Heap-based buffer overflow in the is_gpt_valid function in fs/partitions/efi.c in the Linux kernel 2.6.38 and earlier allows physically proximate attackers to cause a denial of service (OOPS) or possibly have unspecified other impact via a crafted size of the EFI GUID partition-table header on removable media.
4.9 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
The get_free_port function in Xen allows local authenticated DomU users to cause a denial of service or possibly gain privileges via unspecified vectors involving a new event channel port.
6.5 ()
Vendor Fix
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259
To install kernel packages manually, use "rpm -ivh [package]". Do not
use "rpm -Uvh" as that will remove the running kernel binaries from
your system. You may use "rpm -e" to remove old kernels after
determining that the new kernel functions properly on your system.
https://access.redhat.com/errata/RHSA-2011:0833
References
Acknowledgments
Kees Cook
Openwall
Vasiliy Kulikov
Timo Warns
Dan Rosenberg
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"text": "kernel: proc: protect mm start_code/end_code in /proc/pid/stat",
"title": "Vulnerability summary"
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"text": "Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle,\nhttps://access.redhat.com/support/policy/updates/errata/, therefore the fix for\nthis issue is not currently planned to be included in the future updates. Future kernel updates in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG may address this flaw.",
"title": "Statement"
},
{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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{
"category": "external",
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=684569"
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{
"category": "external",
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{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-0726",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2011-0726"
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"release_date": "2011-03-11T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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"details": "Low"
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],
"title": "kernel: proc: protect mm start_code/end_code in /proc/pid/stat"
},
{
"acknowledgments": [
{
"names": [
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],
"organization": "Openwall"
}
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "681259"
}
],
"notes": [
{
"category": "description",
"text": "The sco_sock_getsockopt_old function in net/bluetooth/sco.c in the Linux kernel before 2.6.39 does not initialize a certain structure, which allows local users to obtain potentially sensitive information from kernel stack memory via the SCO_CONNINFO option.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: bt sco_conninfo infoleak",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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{
"category": "external",
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=681259"
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{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2011-1078"
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{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-1078",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1078"
}
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"release_date": "2011-02-14T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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],
"title": "kernel: bt sco_conninfo infoleak"
},
{
"acknowledgments": [
{
"names": [
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],
"organization": "Openwall"
}
],
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "681260"
}
],
"notes": [
{
"category": "description",
"text": "The bnep_sock_ioctl function in net/bluetooth/bnep/sock.c in the Linux kernel before 2.6.39 does not ensure that a certain device field ends with a \u0027\\0\u0027 character, which allows local users to obtain potentially sensitive information from kernel stack memory, or cause a denial of service (BUG and system crash), via a BNEPCONNADD command.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: bnep device field missing NULL terminator",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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{
"category": "external",
"summary": "RHBZ#681260",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=681260"
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{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2011-1079"
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{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-1079",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1079"
}
],
"release_date": "2011-02-14T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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"details": "Moderate"
}
],
"title": "kernel: bnep device field missing NULL terminator"
},
{
"acknowledgments": [
{
"names": [
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],
"organization": "Openwall"
}
],
"cve": "CVE-2011-1080",
"discovery_date": "2011-02-28T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "681262"
}
],
"notes": [
{
"category": "description",
"text": "The do_replace function in net/bridge/netfilter/ebtables.c in the Linux kernel before 2.6.39 does not ensure that a certain name field ends with a \u0027\\0\u0027 character, which allows local users to obtain potentially sensitive information from kernel stack memory by leveraging the CAP_NET_ADMIN capability to replace a table, and then reading a modprobe command line.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: ebtables stack infoleak",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"category": "self",
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{
"category": "external",
"summary": "RHBZ#681262",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=681262"
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{
"category": "external",
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"url": "https://www.cve.org/CVERecord?id=CVE-2011-1080"
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{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-1080",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1080"
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"release_date": "2011-02-14T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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"title": "kernel: ebtables stack infoleak"
},
{
"cve": "CVE-2011-1093",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
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"ids": [
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"text": "682954"
}
],
"notes": [
{
"category": "description",
"text": "The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation in the Linux kernel before 2.6.38 does not properly handle packets for a CLOSED endpoint, which allows remote attackers to cause a denial of service (NULL pointer dereference and OOPS) by sending a DCCP-Close packet followed by a DCCP-Reset packet.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: dccp: fix oops on Reset after close",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue did not affect the version of Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not include support for the DCCP protocol. Future updates in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG may address this flaw.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2011-1093"
},
{
"category": "external",
"summary": "RHBZ#682954",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=682954"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2011-1093",
"url": "https://www.cve.org/CVERecord?id=CVE-2011-1093"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-1093",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1093"
}
],
"release_date": "2011-03-02T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.8,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:C",
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"title": "kernel: dccp: fix oops on Reset after close"
},
{
"acknowledgments": [
{
"names": [
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],
"cve": "CVE-2011-1163",
"discovery_date": "2011-03-16T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "688021"
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{
"category": "description",
"text": "The osf_partition function in fs/partitions/osf.c in the Linux kernel before 2.6.38 does not properly handle an invalid number of partitions, which might allow local users to obtain potentially sensitive information from kernel heap memory via vectors related to partition-table parsing.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: fs/partitions: Corrupted OSF partition table infoleak",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This has been addressed in Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0833.html, https://rhn.redhat.com/errata/RHSA-2011-0542.html, and https://rhn.redhat.com/errata/RHSA-2011-0500.html. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for\nthis issue is not currently planned to be included in the future updates.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"category": "vendor_fix",
"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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{
"cve": "CVE-2011-1166",
"discovery_date": "2011-03-17T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "688579"
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],
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{
"category": "description",
"text": "Xen, possibly before 4.0.2, allows local 64-bit PV guests to cause a denial of service (host crash) by specifying user mode execution without user-mode pagetables.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: xen: x86_64: fix error checking in arch_set_info_guest()",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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"title": "kernel: xen: x86_64: fix error checking in arch_set_info_guest()"
},
{
"acknowledgments": [
{
"names": [
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"organization": "Openwall"
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"text": "689321"
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{
"category": "description",
"text": "net/ipv4/netfilter/arp_tables.c in the IPv4 implementation in the Linux kernel before 2.6.39 does not place the expected \u0027\\0\u0027 character at the end of string data in the values of certain structure members, which allows local users to obtain potentially sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability to issue a crafted request, and then reading the argument to the resulting modprobe process.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: ipv4: netfilter: arp_tables: fix infoleak to userspace",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance\nlife-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore\nthe fix for this issue is not currently planned to be included in the future\nupdates. Future kernel updates in Red Hat Enterprise Linux 5, 6 and Red Hat\nEnterprise MRG may address this flaw.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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"title": "kernel: ipv4: netfilter: arp_tables: fix infoleak to userspace"
},
{
"acknowledgments": [
{
"names": [
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],
"organization": "Openwall"
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"discovery_date": "2011-03-21T00:00:00+00:00",
"ids": [
{
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"text": "689327"
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"notes": [
{
"category": "description",
"text": "net/ipv4/netfilter/ip_tables.c in the IPv4 implementation in the Linux kernel before 2.6.39 does not place the expected \u0027\\0\u0027 character at the end of string data in the values of certain structure members, which allows local users to obtain potentially sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability to issue a crafted request, and then reading the argument to the resulting modprobe process.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: ipv4: netfilter: ip_tables: fix infoleak to userspace",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance\nlife-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates. Future kernel updates in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG may address this flaw.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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"details": "Low"
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"title": "kernel: ipv4: netfilter: ip_tables: fix infoleak to userspace"
},
{
"acknowledgments": [
{
"names": [
"Vasiliy Kulikov"
],
"organization": "Openwall"
}
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"cve": "CVE-2011-1172",
"discovery_date": "2011-03-21T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "689345"
}
],
"notes": [
{
"category": "description",
"text": "net/ipv6/netfilter/ip6_tables.c in the IPv6 implementation in the Linux kernel before 2.6.39 does not place the expected \u0027\\0\u0027 character at the end of string data in the values of certain structure members, which allows local users to obtain potentially sensitive information from kernel memory by leveraging the CAP_NET_ADMIN capability to issue a crafted request, and then reading the argument to the resulting modprobe process.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: ipv6: netfilter: ip6_tables: fix infoleak to userspace",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle,\nhttps://access.redhat.com/support/policy/updates/errata/, therefore the fix for\nthis issue is not currently planned to be included in the future updates. Future kernel updates in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise\nMRG may address this flaw.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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"title": "kernel: ipv6: netfilter: ip6_tables: fix infoleak to userspace"
},
{
"acknowledgments": [
{
"names": [
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}
],
"cve": "CVE-2011-1494",
"cwe": {
"id": "CWE-119",
"name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
},
"discovery_date": "2011-04-06T00:00:00+00:00",
"ids": [
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"system_name": "Red Hat Bugzilla ID",
"text": "694021"
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],
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{
"category": "description",
"text": "Integer overflow in the _ctl_do_mpt_command function in drivers/scsi/mpt2sas/mpt2sas_ctl.c in the Linux kernel 2.6.38 and earlier might allow local users to gain privileges or cause a denial of service (memory corruption) via an ioctl call specifying a crafted value that triggers a heap-based buffer overflow.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: drivers/scsi/mpt2sas: prevent heap overflows",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue did not affect the version of Linux kernel as shipped with Red Hat\nEnterprise Linux 4 as it did not provide support for MPT (Message Passing\nTechnology) based controllers. This has been addressed in Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0833.html, and https://rhn.redhat.com/errata/RHSA-2011-0542.html, and https://rhn.redhat.com/errata/RHSA-2011-1253.html.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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"title": "kernel: drivers/scsi/mpt2sas: prevent heap overflows"
},
{
"acknowledgments": [
{
"names": [
"Dan Rosenberg"
]
}
],
"cve": "CVE-2011-1495",
"cwe": {
"id": "CWE-119",
"name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
},
"discovery_date": "2011-04-06T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "694021"
}
],
"notes": [
{
"category": "description",
"text": "drivers/scsi/mpt2sas/mpt2sas_ctl.c in the Linux kernel 2.6.38 and earlier does not validate (1) length and (2) offset values before performing memory copy operations, which might allow local users to gain privileges, cause a denial of service (memory corruption), or obtain sensitive information from kernel memory via a crafted ioctl call, related to the _ctl_do_mpt_command and _ctl_diag_read_buffer functions.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: drivers/scsi/mpt2sas: prevent heap overflows",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue did not affect the version of Linux kernel as shipped with Red Hat\nEnterprise Linux 4 as it did not provide support for MPT (Message Passing\nTechnology) based controllers. This has been addressed in Red Hat Enterprise Linux 5, 6, and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0833.html, and https://rhn.redhat.com/errata/RHSA-2011-0542.html, and https://rhn.redhat.com/errata/RHSA-2011-1253.html.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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"details": "Important"
}
],
"title": "kernel: drivers/scsi/mpt2sas: prevent heap overflows"
},
{
"acknowledgments": [
{
"names": [
"Timo Warns"
]
}
],
"cve": "CVE-2011-1577",
"discovery_date": "2011-04-13T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "695976"
}
],
"notes": [
{
"category": "description",
"text": "Heap-based buffer overflow in the is_gpt_valid function in fs/partitions/efi.c in the Linux kernel 2.6.38 and earlier allows physically proximate attackers to cause a denial of service (OOPS) or possibly have unspecified other impact via a crafted size of the EFI GUID partition-table header on removable media.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: corrupted GUID partition tables can cause kernel oops",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue affects the versions of Linux kernel as shipped with Red Hat\nEnterprise Linux 4, 5, 6, and Red Hat Enterprise MRG. This has been addressed in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0833.html, https://rhn.redhat.com/errata/RHSA-2011-1465.html, and https://rhn.redhat.com/errata/RHSA-2011-1253.html. Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore the fix for this issue is not currently planned to be included in the future updates.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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{
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{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-1577",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1577"
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"release_date": "2011-04-13T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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{
"cve": "CVE-2011-1763",
"discovery_date": "2011-04-30T00:00:00+00:00",
"ids": [
{
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{
"category": "description",
"text": "The get_free_port function in Xen allows local authenticated DomU users to cause a denial of service or possibly gain privileges via unspecified vectors involving a new event channel port.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: xen: improper upper boundary check in get_free_port() function",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This issue only affects Red Hat Enterprise Linux 5 as we did not backport upstream Xen unstable commit 2dcdd2fcb945. The versions of the Linux kernel as shipped with Red Hat Enterprise Linux 4, 6, and Red Hat Enterprise MRG are not affected.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"date": "2011-05-31T14:03:00+00:00",
"details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nTo install kernel packages manually, use \"rpm -ivh [package]\". Do not\nuse \"rpm -Uvh\" as that will remove the running kernel binaries from\nyour system. You may use \"rpm -e\" to remove old kernels after\ndetermining that the new kernel functions properly on your system.",
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]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: xen: improper upper boundary check in get_free_port() function"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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