Use After Free The advisory has been revoked - it doesn't affect any version of package kernel-debug (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL9-KERNELDEBUG-7232193
- published10 Jun 2024
- disclosed21 May 2024
Introduced: 21 May 2024
CVE-2023-52760 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:9.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug package as distributed by RHEL.
In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix slab-use-after-free in gfs2_qd_dealloc
In gfs2_put_super(), whether withdrawn or not, the quota should be cleaned up by gfs2_quota_cleanup().
Otherwise, struct gfs2_sbd will be freed before gfs2_qd_dealloc (rcu callback) has run for all gfs2_quota_data objects, resulting in use-after-free.
Also, gfs2_destroy_threads() and gfs2_quota_cleanup() is already called by gfs2_make_fs_ro(), so in gfs2_put_super(), after calling gfs2_make_fs_ro(), there is no need to call them again.
References
- https://access.redhat.com/security/cve/CVE-2023-52760
- https://git.kernel.org/stable/c/7ad4e0a4f61c57c3ca291ee010a9d677d0199fba
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://git.kernel.org/stable/c/08a28272faa750d4357ea2cb48d2baefd778ea81
- https://git.kernel.org/stable/c/bdcb8aa434c6d36b5c215d02a9ef07551be25a37