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CVE-2025-40103

UnknownEPSS 0.19%

Last modified

CVE-2025-40103 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
0.19%

8.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 8ceb984379462f94bdebef3288d569c6e1f912ea, < d3c8ea197055c260119a13360e8202a27e53e1e4; >= 8ceb984379462f94bdebef3288d569c6e1f912ea, < 790282abe9d805f08618c1c24ea2529e7259b692; >= 8ceb984379462f94bdebef3288d569c6e1f912ea, < d7dd034c14928306db1b46be277ae439b84dacf9; >= 8ceb984379462f94bdebef3288d569c6e1f912ea, < e15605b68b490186da2ad8029c0351a9cfb0b9af; >= 8ceb984379462f94bdebef3288d569c6e1f912ea, < 896bb31e1416f582503db1350cf1bd10dc64e5a6; >= 8ceb984379462f94bdebef3288d569c6e1f912ea, < c2b77f42205ef485a647f62082c442c1cd69d3fc
LinuxLinux3.7

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2025-40103?
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.
How severe is CVE-2025-40103?
Severity scoring for CVE-2025-40103 is pending analysis. The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
How do I fix CVE-2025-40103?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST