rhsa-2023_7548
Vulnerability from csaf_redhat
Published
2023-11-28 16:05
Modified
2024-11-15 17:36
Summary
Red Hat Security Advisory: kernel-rt security update
Notes
Topic
An update for kernel-rt is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe (CVE-2023-2163)
* kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags (CVE-2023-3812)
* kernel: use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)
* kernel: use-after-free due to race condition occurring in dvb_register_device() (CVE-2022-45884)
* kernel: use-after-free due to race condition occurring in dvb_net.c (CVE-2022-45886)
* kernel: use-after-free due to race condition occurring in dvb_ca_en50221.c (CVE-2022-45919)
* kernel: use-after-free in smb2_is_status_io_timeout() (CVE-2023-1192)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
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.
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A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.", "title": "Topic" }, { "category": "general", "text": "The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.\n\nSecurity Fix(es):\n\n* kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe (CVE-2023-2163)\n\n* kernel: tun: bugs for oversize packet when napi frags enabled in tun_napi_alloc_frags (CVE-2023-3812)\n\n* kernel: use after free in nvmet_tcp_free_crypto in NVMe (CVE-2023-5178)\n\n* kernel: use-after-free due to race condition occurring in dvb_register_device() (CVE-2022-45884)\n\n* kernel: use-after-free due to race condition occurring in dvb_net.c (CVE-2022-45886)\n\n* kernel: use-after-free due to race condition occurring in dvb_ca_en50221.c (CVE-2022-45919)\n\n* kernel: use-after-free in smb2_is_status_io_timeout() (CVE-2023-1192)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.", "title": "Details" }, { "category": "legal_disclaimer", "text": "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.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2023:7548", "url": "https://access.redhat.com/errata/RHSA-2023:7548" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "2148510", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2148510" }, { "category": "external", "summary": "2148517", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2148517" }, { "category": "external", "summary": "2151956", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2151956" }, { "category": "external", "summary": "2154178", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2154178" }, { "category": "external", "summary": "2224048", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2224048" }, { "category": "external", "summary": "2240249", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2240249" }, { "category": "external", "summary": "2241924", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2241924" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2023/rhsa-2023_7548.json" } ], "title": "Red Hat Security Advisory: kernel-rt security update", "tracking": { "current_release_date": "2024-11-15T17:36:50+00:00", "generator": { "date": "2024-11-15T17:36:50+00:00", "engine": { "name": "Red Hat SDEngine", 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It could occur in the dvb_register_device() function due to the file_operations structure (fops) being dynamically allocated and later kfreed. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: use-after-free due to race condition occurring in dvb_register_device()", "title": "Vulnerability summary" }, { "category": "other", "text": "To exploit this vulnerability, an attacker must either have credentials for a vulnerable system and physical access to its ports, or they must have the elevated privileges necessary to control USB via sysfs. For that reason, Red Hat assesses the impact of this vulnerability as Moderate.", "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" } ], "product_status": { "fixed": [ "NFV-8.9.0.Z.MAIN:kernel-rt-0:4.18.0-513.9.1.rt7.311.el8_9.src", "NFV-8.9.0.Z.MAIN:kernel-rt-0:4.18.0-513.9.1.rt7.311.el8_9.x86_64", "NFV-8.9.0.Z.MAIN:kernel-rt-core-0:4.18.0-513.9.1.rt7.311.el8_9.x86_64", "NFV-8.9.0.Z.MAIN:kernel-rt-debug-0:4.18.0-513.9.1.rt7.311.el8_9.x86_64", "NFV-8.9.0.Z.MAIN:kernel-rt-debug-core-0:4.18.0-513.9.1.rt7.311.el8_9.x86_64", "NFV-8.9.0.Z.MAIN:kernel-rt-debug-debuginfo-0:4.18.0-513.9.1.rt7.311.el8_9.x86_64", "NFV-8.9.0.Z.MAIN:kernel-rt-debug-devel-0:4.18.0-513.9.1.rt7.311.el8_9.x86_64", 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a use-after-free issue was found in the Linux kernel media subsystem in the dvb_net component of the DVB core device driver. It could occur between the time the device is disconnected (.disconnect function) and the time the device node is opened (dvb_device_open function). A local user could use this flaw to crash the system or potentially escalate their privileges on the system.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: use-after-free due to race condition occurring in dvb_net.c", "title": "Vulnerability summary" }, { "category": "other", "text": "Because this vulnerability requires an attacker to either have physical access to a system with DVB hardware or requires a remote authenticated user to have knowledge about DVB hardware attached to the system and when it is disconnected and reconnected, Red Hat assesses the impact of this vulnerability as Moderate.", "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" } ], "product_status": { "fixed": [ 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use-after-free issue was found in the Linux kernel media subsystem in the DVB CA EN50221 interface of the DVB core device driver. It could occur in the dvb_ca_en50221_release() function if there is a disconnect after an open, because of the lack of a wait_event. A local user could use this flaw to crash the system or potentially escalate their privileges on the system.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: use-after-free due to race condition occurring in dvb_ca_en50221.c", "title": "Vulnerability summary" }, { "category": "other", "text": "Because this vulnerability requires an attacker to either have physical access to a system with DVB hardware or requires a remote authenticated user to have knowledge about DVB hardware attached to the system and when it is disconnected and reconnected, Red Hat assesses the impact of this vulnerability as Moderate.", "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" } ], "product_status": { "fixed": [ 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After CIFS transfers response data to a system call, there are still local variable points to the memory region, and if the system call frees it faster than CIFS uses it, CIFS will access a free memory region, leading to a denial of service.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: use-after-free in smb2_is_status_io_timeout()", "title": "Vulnerability summary" }, { "category": "other", "text": "Because analysis indicates that this issue will only cause momentary interruptions to connections, Red Hat rates the impact of this flaw as Low.", "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" } ], "product_status": { "fixed": [ "NFV-8.9.0.Z.MAIN:kernel-rt-0:4.18.0-513.9.1.rt7.311.el8_9.src", 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container escape.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: bpf: Incorrect verifier pruning leads to unsafe code paths being incorrectly marked as safe", "title": "Vulnerability summary" }, { "category": "other", "text": "The Red Hat Enterprise Linux 9.3 not affected, because the required patch applied before this CVE creation. 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"summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2023-2163" }, { "category": "external", "summary": "RHBZ#2240249", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2240249" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2023-2163", "url": "https://www.cve.org/CVERecord?id=CVE-2023-2163" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-2163", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-2163" }, { "category": "external", "summary": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71b547f561247897a0a14f3082730156c0533fed", "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71b547f561247897a0a14f3082730156c0533fed" } ], "release_date": "2023-04-19T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2023-11-28T16:05:26+00:00", "details": "For details on how to apply this update, which includes the 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vulnerability was found in drivers/nvme/target/tcp.c` in `nvmet_tcp_free_crypto` due to a logical bug in the NVMe/TCP subsystem in the Linux kernel. This issue may allow a malicious user to cause a use-after-free and double-free problem, which may permit remote code execution or lead to local privilege escalation.", "title": "Vulnerability description" }, { "category": "summary", "text": "kernel: use after free in nvmet_tcp_free_crypto in NVMe", "title": "Vulnerability summary" }, { "category": "other", "text": "This vulnerability is actual only for systems where NVME over TCP being used.", "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" } ], "product_status": { "fixed": [ "NFV-8.9.0.Z.MAIN:kernel-rt-0:4.18.0-513.9.1.rt7.311.el8_9.src", "NFV-8.9.0.Z.MAIN:kernel-rt-0:4.18.0-513.9.1.rt7.311.el8_9.x86_64", "NFV-8.9.0.Z.MAIN:kernel-rt-core-0:4.18.0-513.9.1.rt7.311.el8_9.x86_64", 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Sightings
Author | Source | Type | Date |
---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.