Resource Leak Affecting perf package, versions <0:4.18.0-513.5.1.el8_9
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Test your applications- Snyk ID SNYK-RHEL8-PERF-6154830
- published 12 Jan 2024
- disclosed 14 Dec 2023
Introduced: 14 Dec 2023
CVE-2024-0443 Open this link in a new tabHow to fix?
Upgrade RHEL:8 perf to version 0:4.18.0-513.5.1.el8_9 or higher.
This issue was patched in RHSA-2023:7077.
NVD Description
Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
A flaw was found in the blkgs destruction path in block/blk-cgroup.c in the Linux kernel, leading to a cgroup blkio memory leakage problem. When a cgroup is being destroyed, cgroup_rstat_flush() is only called at css_release_work_fn(), which is called when the blkcg reference count reaches 0. This circular dependency will prevent blkcg and some blkgs from being freed after they are made offline. This issue may allow an attacker with a local access to cause system instability, such as an out of memory error.