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Description

In the Linux kernel, the following vulnerability has been resolved: smb: client: Fix refcount leak for cifs_sb_tlink Fix three refcount inconsistency issues related to `cifs_sb_tlink`. Comments for `cifs_sb_tlink` state that `cifs_put_tlink()` needs to be called after successful calls to `cifs_sb_tlink()`. Three calls fail to update refcount accordingly, leading to possible resource leaks.

PUBLISHED Reserved 2025-04-16 | Published 2025-10-30 | Updated 2025-10-30 | Assigner Linux

Product status

Default status
unaffected

8ceb984379462f94bdebef3288d569c6e1f912ea (git) before 790282abe9d805f08618c1c24ea2529e7259b692
affected

8ceb984379462f94bdebef3288d569c6e1f912ea (git) before d7dd034c14928306db1b46be277ae439b84dacf9
affected

8ceb984379462f94bdebef3288d569c6e1f912ea (git) before e15605b68b490186da2ad8029c0351a9cfb0b9af
affected

8ceb984379462f94bdebef3288d569c6e1f912ea (git) before 896bb31e1416f582503db1350cf1bd10dc64e5a6
affected

8ceb984379462f94bdebef3288d569c6e1f912ea (git) before c2b77f42205ef485a647f62082c442c1cd69d3fc
affected

Default status
affected

3.7
affected

Any version before 3.7
unaffected

6.1.158 (semver)
unaffected

6.6.114 (semver)
unaffected

6.12.55 (semver)
unaffected

6.17.5 (semver)
unaffected

6.18-rc2 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/790282abe9d805f08618c1c24ea2529e7259b692

git.kernel.org/...c/d7dd034c14928306db1b46be277ae439b84dacf9

git.kernel.org/...c/e15605b68b490186da2ad8029c0351a9cfb0b9af

git.kernel.org/...c/896bb31e1416f582503db1350cf1bd10dc64e5a6

git.kernel.org/...c/c2b77f42205ef485a647f62082c442c1cd69d3fc

cve.org (CVE-2025-40103)

nvd.nist.gov (CVE-2025-40103)

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