CVE-2026-93231: Linux kernel · lockd: fix swapped arguments in nlmsvc_match_ip()
Affects Linux kernelSource GCVE Database
Not known to be exploited.
Data as of 26 Oct 2026, 17:16 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
CVE published 24 Sep 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
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSlinuxpkg:deb/ubuntu/linux?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-awspkg:deb/ubuntu/linux-aws?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azurepkg:deb/ubuntu/linux-azure?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-azure-fdepkg:deb/ubuntu/linux-azure-fde?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gcppkg:deb/ubuntu/linux-gcp?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSlinux-gkepkg:deb/ubuntu/linux-gke?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available that corrects the argument order in nlmsvc_match_ip(). Users should apply the updated Linux kernel versions that include this patch to ensure proper lock release behavior. No additional mitigation is indicated.
Description
A vulnerability in the Linux kernel's lockd component involved swapped arguments in the nlmsvc_match_ip() function. This flaw caused the unlock-by-IP feature to fail in releasing locks associated with a given server IP address, as the comparison logic was incorrect. The issue has been resolved by correcting the argument order in the comparison function.
References
- ubuntu.com/security/CVE-2026-93231 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-93231 (opens in a new tab)
- git.kernel.org/stable/c/0d72e78c9d38d5377a059a4837f82b65b91cdcf6 (opens in a new tab)
- git.kernel.org/stable/c/21bcb609e0ab1dd60f39ca3498f85808933bcc9f (opens in a new tab)
- git.kernel.org/stable/c/b9060689f49dc663e9a3d069c4a65ff63a836e66 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-93231 (opens in a new tab)
- git.kernel.org/stable/c/d34c2ac447fe0490ede828e0143e2cbcb59e6c77 (opens in a new tab)