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CVE-2025-40103

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CVE-2025-40103

Published: Oct 30, 2025

Modified: May 11, 2026

PUBLISHED

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.

VendorProductVersions

Linux

Linux

affected
8ceb984379462f94bdebef3288d569c6e1f912ea - < d3c8ea197055c260119a13360e8202a27e53e1e4
affected
8ceb984379462f94bdebef3288d569c6e1f912ea - < 790282abe9d805f08618c1c24ea2529e7259b692
affected
8ceb984379462f94bdebef3288d569c6e1f912ea - < d7dd034c14928306db1b46be277ae439b84dacf9
affected
8ceb984379462f94bdebef3288d569c6e1f912ea - < e15605b68b490186da2ad8029c0351a9cfb0b9af
affected
8ceb984379462f94bdebef3288d569c6e1f912ea - < 896bb31e1416f582503db1350cf1bd10dc64e5a6

+1 more versions

Linux

Linux

affected
3.7
unaffected
0 - < 3.7
unaffected
5.15.203 - <= 5.15.*
unaffected
6.1.158 - <= 6.1.*
unaffected
6.6.114 - <= 6.6.*

+3 more versions

References

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