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CVE-2025-40286smb/server: fix possible memory leak in smb2_read()
- —Not scoredno CVSS score yet
- 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: smb/server: fix possible memory leak in smb2_read() Memory leak occurs when ksmbd_vfs_read() fails. Fix this by adding the missing kvfree().
Timeline
ID reserved
By Linux
- 8 months later
· 8 months later
Published
- 5 months later
· 5 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
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Deferred.
- EPSS (exploitation in 30 days)
- 0.20% · top 90% of all CVEs (12 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < 0797c6cf3b857cc229ab2bc69552938dcd738d78
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < 63d8706a2c09a0c29b8b0e8a44bc7a1339685de9
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < f1305587731886da37a214cda812ade246c653b0
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < bfda5422a16651d0bf864ec468b1c216e1b10d91
- affected e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9 – < 6fced056d2cc8d01b326e6fcfabaacb9850b71a4
- affected 5.15
- unaffected < 5.15
- unaffected 6.1.159 – ≤ 6.1.*
- unaffected 6.6.117 – ≤ 6.6.*
- unaffected 6.12.59 – ≤ 6.12.*
- unaffected 6.17.9 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References5
- https://git.kernel.org/stable/c/0797c6cf3b857cc229ab2bc69552938dcd738d78 (opens in a new tab)
- https://git.kernel.org/stable/c/63d8706a2c09a0c29b8b0e8a44bc7a1339685de9 (opens in a new tab)
- https://git.kernel.org/stable/c/f1305587731886da37a214cda812ade246c653b0 (opens in a new tab)
- https://git.kernel.org/stable/c/bfda5422a16651d0bf864ec468b1c216e1b10d91 (opens in a new tab)
- https://git.kernel.org/stable/c/6fced056d2cc8d01b326e6fcfabaacb9850b71a4 (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-2025-201569 (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-2025-40286)Record last updated .