CVE-2023-53867
ceph: fix potential use-after-free bug when trimming caps
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: ceph: fix potential use-after-free bug when trimming caps When trimming the caps and just after the 'session->s_cap_lock' is released in ceph_iterate_session_caps() the cap maybe removed by another thread, and when using the stale cap memory in the callbacks it will trigger use-after-free crash. We need to check the existence of the cap just after the 'ci->i_ceph_lock' being acquired. And do nothing if it's already removed.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 24, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
2f2dc053404febedc9c273452d9d518fb31fde72 < 2b2515b8095cf2149bef44383a99d5b5677f1831 2f2dc053404febedc9c273452d9d518fb31fde72 < 448875a73e16ba7d81dec9274ce9d33a12d092fb 2f2dc053404febedc9c273452d9d518fb31fde72 < ae6e935618d99cdba11eab4714092e7e5f13cf7e 2f2dc053404febedc9c273452d9d518fb31fde72 < aaf67de78807c59c35bafb5003d4fb457c764800
Linux / Linux
2.6.34
References
git.kernel.org: https://git.kernel.org/stable/c/2b2515b8095cf2149bef44383a99d5b5677f1831 git.kernel.org: https://git.kernel.org/stable/c/448875a73e16ba7d81dec9274ce9d33a12d092fb git.kernel.org: https://git.kernel.org/stable/c/ae6e935618d99cdba11eab4714092e7e5f13cf7e git.kernel.org: https://git.kernel.org/stable/c/aaf67de78807c59c35bafb5003d4fb457c764800