CVE-2026-31410: Linux kernel · ksmbd: use volume UUID in FS_OBJECT_ID_INFORMATION
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in ce00616bc1df675bfdacc968f2bf7c51f4669227 : update Linux kernel when convenient.
Data as of 26 Oct 2026, 20:59 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 5% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in ce00616bc1df675bfdacc968f2bf7c51f4669227, c283a6ffe6d5d6e5594d991286b9ce15951572e1, 3d80ebe6d1b7bc9ad20fd9b0c1a0c56d804f8a0a +2
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
AI-suggested
A fix has been implemented and is available in the Linux kernel source as indicated by the fixed commit hashes. Users and administrators should update to a kernel version that includes these fixes to resolve the vulnerability.
Description
A vulnerability in the Linux kernel's ksmbd component related to the use of volume identifiers has been resolved. The fix involves using the filesystem's UUID as the primary volume identifier in FS_OBJECT_ID_INFORMATION, with a fallback to the filesystem ID from vfs_statfs() when a UUID is not available.
References
- git.kernel.org/stable/c/1df0123f96f377282feaae24d8e561fff4a6541f (opens in a new tab)
- git.kernel.org/stable/c/ce00616bc1df675bfdacc968f2bf7c51f4669227 (opens in a new tab)
- git.kernel.org/stable/c/3d80ebe6d1b7bc9ad20fd9b0c1a0c56d804f8a0a (opens in a new tab)
- git.kernel.org/stable/c/c283a6ffe6d5d6e5594d991286b9ce15951572e1 (opens in a new tab)
- git.kernel.org/stable/c/3a64125730cabc34fccfbc230c2667c2e14f7308 (opens in a new tab)