Back
CVE-2023-53867
ceph: fix potential use-after-free bug when trimming caps
Critical9.8EPSS 0.53%
- Published
- Updated
- Reserved
- Assigned by
- Linux
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.53% · top 55% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
- affected 2f2dc053404febedc9c273452d9d518fb31fde72 – < 2b2515b8095cf2149bef44383a99d5b5677f1831
- affected 2f2dc053404febedc9c273452d9d518fb31fde72 – < 448875a73e16ba7d81dec9274ce9d33a12d092fb
- affected 2f2dc053404febedc9c273452d9d518fb31fde72 – < ae6e935618d99cdba11eab4714092e7e5f13cf7e
- affected 2f2dc053404febedc9c273452d9d518fb31fde72 – < aaf67de78807c59c35bafb5003d4fb457c764800
- affected 2.6.34
- unaffected < 2.6.34
- unaffected 6.1.28 – ≤ 6.1.*
- unaffected 6.2.15 – ≤ 6.2.*
- unaffected 6.3.2 – ≤ 6.3.*
- unaffected 6.4 – ≤ *
References (4)
- https://git.kernel.org/stable/c/2b2515b8095cf2149bef44383a99d5b5677f1831 (opens in a new tab)
- https://git.kernel.org/stable/c/448875a73e16ba7d81dec9274ce9d33a12d092fb (opens in a new tab)
- https://git.kernel.org/stable/c/ae6e935618d99cdba11eab4714092e7e5f13cf7e (opens in a new tab)
- https://git.kernel.org/stable/c/aaf67de78807c59c35bafb5003d4fb457c764800 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-53867)Record last updated .