CVE-2026-31523: Linux kernel · nvme-pci: ensure we're polling a polled queue
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in ba167d5982e2eb6ff9356d409eca592ce99555da : patch Linux kernel soon.
Data as of 5 Nov 2026, 22:17 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- CISA SSVC
- Exploitation
- No evidence of active exploitation and no public proof of concept
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2026-11-05.
- Patch
- Available – fixed in ba167d5982e2eb6ff9356d409eca592ce99555da, b222680ba55e018426c4535067a008f1d81a5d21, b96c7b25eb1b748f3e3b1832ebf028b0b223d7e3 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 22 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 5 Nov 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
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AI-suggested
This vulnerability has been fixed in the Linux kernel. Users should update to a kernel version that includes the listed fixes. No additional mitigation is required beyond applying the official patches.
Description
A vulnerability in the Linux kernel's nvme-pci driver allows a race condition during queue polling after a reset. This occurs because a high-priority task may poll a queue before the block layer updates queue mappings, potentially causing double completions.
References
- git.kernel.org/stable/c/965e2c943f065122f14282a88d70a8a92e12a4da (opens in a new tab)
- git.kernel.org/stable/c/ba167d5982e2eb6ff9356d409eca592ce99555da (opens in a new tab)
- git.kernel.org/stable/c/0685dd9cb855ab77fcf3577b4702ba1d6df1c98d (opens in a new tab)
- git.kernel.org/stable/c/6f12734c4b619f923a4df0b1a46b8098b187d324 (opens in a new tab)
- git.kernel.org/stable/c/acbc72dd1a09df53cafcf577259f4678be6afd6d (opens in a new tab)
- git.kernel.org/stable/c/b96c7b25eb1b748f3e3b1832ebf028b0b223d7e3 (opens in a new tab)
- git.kernel.org/stable/c/b222680ba55e018426c4535067a008f1d81a5d21 (opens in a new tab)
- git.kernel.org/stable/c/166e31d7dbf6aa44829b98aa446bda5c9580f12a (opens in a new tab)