CVE-2026-31523 Details
Description
In the Linux kernel, the following vulnerability has been resolved: nvme-pci: ensure we're polling a polled queue A user can change the polled queue count at run time. There's a brief window during a reset where a hipri task may try to poll that queue before the block layer has updated the queue maps, which would race with the now interrupt driven queue and may cause double completions.
A vulnerability in the Linux kernel's NVMe over PCI driver can lead to improper queue polling, potentially causing double completion of tasks. This issue arises because a user can modify the polled queue count at runtime. During a reset, there is a short window where a high-priority task might attempt to poll the queue before the block layer has refreshed the queue mappings. This can conflict with the now interrupt-driven queue, leading to double completions.
Users can apply the latest patches available in the Linux kernel stable tree to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/0685dd9cb855ab77fcf3577b4702ba1d6df1c98d | kernel.org | Patch |
| https://git.kernel.org/stable/c/166e31d7dbf6aa44829b98aa446bda5c9580f12a | kernel.org | Patch |
| https://git.kernel.org/stable/c/6f12734c4b619f923a4df0b1a46b8098b187d324 | kernel.org | Patch |
| https://git.kernel.org/stable/c/965e2c943f065122f14282a88d70a8a92e12a4da | kernel.org | Patch |
| https://git.kernel.org/stable/c/acbc72dd1a09df53cafcf577259f4678be6afd6d | kernel.org | Patch |
| https://git.kernel.org/stable/c/b222680ba55e018426c4535067a008f1d81a5d21 | kernel.org | Patch |
| https://git.kernel.org/stable/c/b96c7b25eb1b748f3e3b1832ebf028b0b223d7e3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/ba167d5982e2eb6ff9356d409eca592ce99555da | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-367 | Time-of-check Time-of-use (TOCTOU) Race Condition | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.0, < 5.10.253 >= 5.11, < 5.15.203 >= 5.16, < 6.1.168 >= 6.2, < 6.6.131 >= 6.7, < 6.12.80 >= 6.13, < 6.18.21 >= 6.19, < 6.19.11 7.0 rc1 7.0 rc2 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Apr 28, 2026 | Initial Analysis | [email protected] |
| Apr 22, 2026 | New CVE Received | kernel.org |