CVE-2025-38396fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass
- 7.8HighCVSS base score
- 0.20%Exploitation in 30 daysEPSS · top 90% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: fs: export anon_inode_make_secure_inode() and fix secretmem LSM bypass Export anon_inode_make_secure_inode() to allow KVM guest_memfd to create anonymous inodes with proper security context. This replaces the current pattern of calling alloc_anon_inode() followed by inode_init_security_anon() for creating security context manually. This change also fixes a security regression in secretmem where the S_PRIVATE flag was not cleared after alloc_anon_inode(), causing LSM/SELinux checks to be bypassed for secretmem file descriptors. As guest_memfd currently resides in the KVM module, we need to export this symbol for use outside the core kernel. In the future, guest_memfd might be moved to core-mm, at which point the symbols no longer would have to be exported. When/if that happens is still unclear.
Timeline
ID reserved
By Linux
- 3 months later
· 3 months later
Published
- 13 months later
· 13 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 2bfe15c5261212130f1a71f32a300bcf426443d4 – < 66d29d757c968d2bee9124816da5d718eb352959
- affected 2bfe15c5261212130f1a71f32a300bcf426443d4 – < e3eed01347721cd7a8819568161c91d538fbf229
- affected 2bfe15c5261212130f1a71f32a300bcf426443d4 – < f94c422157f3e43dd31990567b3e5d54b3e5b32b
- affected 2bfe15c5261212130f1a71f32a300bcf426443d4 – < 6ca45ea48530332a4ba09595767bd26d3232743b
- affected 2bfe15c5261212130f1a71f32a300bcf426443d4 – < cbe4134ea4bc493239786220bd69cb8a13493190
- affected 6.0
- unaffected < 6.0
- unaffected 6.1.146 – ≤ 6.1.*
- unaffected 6.6.97 – ≤ 6.6.*
- unaffected 6.12.37 – ≤ 6.12.*
- unaffected 6.15.6 – ≤ 6.15.*
- unaffected 6.16 – ≤ *
References
References6
- https://git.kernel.org/stable/c/66d29d757c968d2bee9124816da5d718eb352959 (opens in a new tab)
- https://git.kernel.org/stable/c/e3eed01347721cd7a8819568161c91d538fbf229 (opens in a new tab)
- https://git.kernel.org/stable/c/f94c422157f3e43dd31990567b3e5d54b3e5b32b (opens in a new tab)
- https://git.kernel.org/stable/c/6ca45ea48530332a4ba09595767bd26d3232743b (opens in a new tab)
- https://git.kernel.org/stable/c/cbe4134ea4bc493239786220bd69cb8a13493190 (opens in a new tab)
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html (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)
- EUVD EUVD-2025-22607 (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://cveledger.app/cve/CVE-2025-38396)Record last updated .