HOMEVULNERABILITIESCVE-2026-31523
MEDIUM

CVE-2026-31523

Published: April 22, 2026· Updated: Apr 28, 2026

4.7
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:6.8th

Official 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.

NVD Source

Technical Analysis

CVE-2026-31523 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 4.7.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/stable/c/0685dd9cb855ab77fcf3577b4702ba1d6df1c98d
PATCHhttps://git.kernel.org/stable/c/166e31d7dbf6aa44829b98aa446bda5c9580f12a
PATCHhttps://git.kernel.org/stable/c/6f12734c4b619f923a4df0b1a46b8098b187d324
PATCHhttps://git.kernel.org/stable/c/965e2c943f065122f14282a88d70a8a92e12a4da
PATCHhttps://git.kernel.org/stable/c/acbc72dd1a09df53cafcf577259f4678be6afd6d
PATCHhttps://git.kernel.org/stable/c/b222680ba55e018426c4535067a008f1d81a5d21
PATCHhttps://git.kernel.org/stable/c/b96c7b25eb1b748f3e3b1832ebf028b0b223d7e3
PATCHhttps://git.kernel.org/stable/c/ba167d5982e2eb6ff9356d409eca592ce99555da

All References (8)

→
https://git.kernel.org/stable/c/0685dd9cb855ab77fcf3577b4702ba1d6df1c98dPatch
→
https://git.kernel.org/stable/c/166e31d7dbf6aa44829b98aa446bda5c9580f12aPatch
→
https://git.kernel.org/stable/c/6f12734c4b619f923a4df0b1a46b8098b187d324Patch
→
https://git.kernel.org/stable/c/965e2c943f065122f14282a88d70a8a92e12a4daPatch
→
https://git.kernel.org/stable/c/acbc72dd1a09df53cafcf577259f4678be6afd6dPatch
→
https://git.kernel.org/stable/c/b222680ba55e018426c4535067a008f1d81a5d21Patch
→
https://git.kernel.org/stable/c/b96c7b25eb1b748f3e3b1832ebf028b0b223d7e3Patch
→
https://git.kernel.org/stable/c/ba167d5982e2eb6ff9356d409eca592ce99555daPatch

Quick Facts

CVE IDCVE-2026-31523
CVSS Score4.7 / 10
SeverityMEDIUM
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 22, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31523 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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