- 8.8HighCVSS base score
- 0.49%Exploitation in 30 daysEPSS · top 57% 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: smb: client: fix potential UAF in smb2_close_cached_fid() find_or_create_cached_dir() could grab a new reference after kref_put() had seen the refcount drop to zero but before cfid_list_lock is acquired in smb2_close_cached_fid(), leading to use-after-free. Switch to kref_put_lock() so cfid_release() is called with cfid_list_lock held, closing that gap.
Timeline
ID reserved
By Linux
- 8 months later
· 8 months later
Published
- 11 months later
· 11 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 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.49% · top 57% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected ebe98f1447bbccf8228335c62d86af02a0ed23f7 – < bb3355ce9dcaba1b4a766f98b2ad373cab6cd626
- affected ebe98f1447bbccf8228335c62d86af02a0ed23f7 – < cb52d9c86d70298de0ab7c7953653898cbc0efd6
- affected ebe98f1447bbccf8228335c62d86af02a0ed23f7 – < 065bd62412271a2d734810dd50336cae88c54427
- affected ebe98f1447bbccf8228335c62d86af02a0ed23f7 – < bdb596ceb4b7c3f28786a33840263728217fbcf5
- affected ebe98f1447bbccf8228335c62d86af02a0ed23f7 – < 734e99623c5b65bf2c03e35978a0b980ebc3c2f8
- affected 6.1
- unaffected < 6.1
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.117 – ≤ 6.6.*
- unaffected 6.12.58 – ≤ 6.12.*
- unaffected 6.17.8 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References5
- https://git.kernel.org/stable/c/bb3355ce9dcaba1b4a766f98b2ad373cab6cd626 (opens in a new tab)
- https://git.kernel.org/stable/c/cb52d9c86d70298de0ab7c7953653898cbc0efd6 (opens in a new tab)
- https://git.kernel.org/stable/c/065bd62412271a2d734810dd50336cae88c54427 (opens in a new tab)
- https://git.kernel.org/stable/c/bdb596ceb4b7c3f28786a33840263728217fbcf5 (opens in a new tab)
- https://git.kernel.org/stable/c/734e99623c5b65bf2c03e35978a0b980ebc3c2f8 (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-2025-201874 (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-2025-40328)Record last updated .