Headline
Red Hat Security Advisory 2024-1303-03
Red Hat Security Advisory 2024-1303-03 - An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include a memory exhaustion vulnerability.
The following advisory data is extracted from:
https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_1303.json
Red Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat’s archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.
- Packet Storm Staff
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Red Hat Security Advisory
Synopsis: Moderate: kernel-rt security and bug fix update
Advisory ID: RHSA-2024:1303-03
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2024:1303
Issue date: 2024-03-13
Revision: 03
CVE Names: CVE-2022-0480
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Summary:
An update for kernel-rt is now available for Red Hat Enterprise Linux 9.2 Extended Update Support.
'Red Hat Product Security has rated this update as having a security impact of Moderate. 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.
Description:
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: memcg does not limit the number of POSIX file locks allowing memory exhaustion (CVE-2022-0480)
Bug Fix(es):
kernel-rt: kernel: memcg does not limit the number of POSIX file locks allowing memory exhaustion (JIRA:RHEL-8998)
kernel-rt: update RT source tree to the latest RHEL-9.2.z7 Batch (JIRA:RHEL-26863)
Solution:
https://access.redhat.com/articles/11258
CVEs:
CVE-2022-0480
References:
https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=2049700
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A flaw was found in the filelock_init in fs/locks.c function in the Linux kernel. This issue can lead to host memory exhaustion due to memcg not limiting the number of Portable Operating System Interface (POSIX) file locks.