csaf_redhat - rhsa-2014

rhsa-2014_0949

Vulnerability from csaf_redhat

Published

2014-07-28 16:03

Modified

2024-09-13 09:18

Summary

Red Hat Security Advisory: kernel security update

Notes

Topic

Updated kernel packages that fix one security issue are now available for Red Hat Enterprise Linux 6.2 Advanced Update Support. The Red Hat Security Response Team has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Details

The kernel packages contain the Linux kernel, the core of any Linux operating system. * It was found that the Linux kernel's ptrace subsystem allowed a traced process' instruction pointer to be set to a non-canonical memory address without forcing the non-sysret code path when returning to user space. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system. (CVE-2014-4699, Important) Note: The CVE-2014-4699 issue only affected systems using an Intel CPU. Red Hat would like to thank Andy Lutomirski for reporting this issue. All kernel users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. The system must be rebooted for this update to take effect.

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.

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        "text": "The kernel packages contain the Linux kernel, the core of any Linux\noperating system.\n\n* It was found that the Linux kernel\u0027s ptrace subsystem allowed a traced\nprocess\u0027 instruction pointer to be set to a non-canonical memory address\nwithout forcing the non-sysret code path when returning to user space.\nA local, unprivileged user could use this flaw to crash the system or,\npotentially, escalate their privileges on the system. (CVE-2014-4699,\nImportant)\n\nNote: The CVE-2014-4699 issue only affected systems using an Intel CPU.\n\nRed Hat would like to thank Andy Lutomirski for reporting this issue.\n\nAll kernel users are advised to upgrade to these updated packages, which\ncontain a backported patch to correct this issue. The system must be\nrebooted for this update to take effect.",
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          "text": "It was found that the Linux kernel\u0027s ptrace subsystem allowed a traced process\u0027 instruction pointer to be set to a non-canonical memory address without forcing the non-sysret code path when returning to user space. A local, unprivileged user could use this flaw to crash the system or, potentially, escalate their privileges on the system.\r\n\r\nNote: The CVE-2014-4699 issue only affected systems using an Intel CPU.",
          "title": "Vulnerability description"
        },
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          "text": "kernel: x86_64: ptrace: sysret to non-canonical address",
          "title": "Vulnerability summary"
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        {
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          "text": "This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5.",
          "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.",
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    }
  ]
}

cve-2014-4699

Vulnerability from cvelistv5

Published

2014-07-09 10:00

Modified

2024-08-06 11:27

Severity

Summary

The Linux kernel before 3.15.4 on Intel processors does not properly restrict use of a non-canonical value for the saved RIP address in the case of a system call that does not use IRET, which allows local users to leverage a race condition and gain privileges, or cause a denial of service (double fault), via a crafted application that makes ptrace and fork system calls.

References

URL	Tags
http://linux.oracle.com/errata/ELSA-2014-3047.html	x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-2269-1	vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2274-1	vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2268-1	vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2267-1	vendor-advisory, x_refsource_UBUNTU
http://www.osvdb.org/108754	vdb-entry, x_refsource_OSVDB
http://secunia.com/advisories/60220	third-party-advisory, x_refsource_SECUNIA
http://www.openwall.com/lists/oss-security/2014/07/04/4	mailing-list, x_refsource_MLIST
http://www.ubuntu.com/usn/USN-2271-1	vendor-advisory, x_refsource_UBUNTU
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.14.11	x_refsource_CONFIRM
http://secunia.com/advisories/59654	third-party-advisory, x_refsource_SECUNIA
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.97	x_refsource_CONFIRM
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.47	x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-2266-1	vendor-advisory, x_refsource_UBUNTU
http://openwall.com/lists/oss-security/2014/07/08/5	mailing-list, x_refsource_MLIST
http://openwall.com/lists/oss-security/2014/07/08/16	mailing-list, x_refsource_MLIST
http://secunia.com/advisories/59633	third-party-advisory, x_refsource_SECUNIA
http://packetstormsecurity.com/files/127573/Linux-Kernel-ptrace-sysret-Local-Privilege-Escalation.html	x_refsource_MISC
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.4	x_refsource_CONFIRM
http://linux.oracle.com/errata/ELSA-2014-0924.html	x_refsource_CONFIRM
http://openwall.com/lists/oss-security/2014/07/05/4	mailing-list, x_refsource_MLIST
http://secunia.com/advisories/60393	third-party-advisory, x_refsource_SECUNIA
http://secunia.com/advisories/60380	third-party-advisory, x_refsource_SECUNIA
http://www.ubuntu.com/usn/USN-2270-1	vendor-advisory, x_refsource_UBUNTU
http://linux.oracle.com/errata/ELSA-2014-3048.html	x_refsource_CONFIRM
http://www.exploit-db.com/exploits/34134	exploit, x_refsource_EXPLOIT-DB
http://secunia.com/advisories/59639	third-party-advisory, x_refsource_SECUNIA
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=b9cd18de4db3c9ffa7e17b0dc0ca99ed5aa4d43a	x_refsource_CONFIRM
http://www.ubuntu.com/usn/USN-2273-1	vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2272-1	vendor-advisory, x_refsource_UBUNTU
https://bugzilla.redhat.com/show_bug.cgi?id=1115927	x_refsource_CONFIRM
http://www.debian.org/security/2014/dsa-2972	vendor-advisory, x_refsource_DEBIAN
https://github.com/torvalds/linux/commit/b9cd18de4db3c9ffa7e17b0dc0ca99ed5aa4d43a	x_refsource_CONFIRM

Impacted products

Vendor	Product
n/a	n/a

Show details on NVD website