HOMEVULNERABILITIESCVE-2026-31480
MEDIUM

CVE-2026-31480

Published: April 22, 2026· Updated: Apr 27, 2026

5.5
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:

tracing: Fix potential deadlock in cpu hotplug with osnoise

The following sequence may leads deadlock in cpu hotplug:

task1 task2 task3

----- ----- -----

mutex_lock(&interface_lock)

[CPU GOING OFFLINE]

cpus_write_lock();

osnoise_cpu_die();

kthread_stop(task3);

wait_for_completion();

osnoise_sleep();

mutex_lock(&interface_lock);

cpus_read_lock();

[DEAD LOCK]

Fix by swap the order of cpus_read_lock() and mutex_lock(&interface_lock).

NVD Source

Technical Analysis

CVE-2026-31480 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 5.5.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

Linux1 product
linux kernel
Source: NVD CPE · 3 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/03474a01c199de17a8e2d39b51df6beb9c76e831
PATCHhttps://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55
PATCHhttps://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f
PATCHhttps://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f
PATCHhttps://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da
PATCHhttps://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aa
PATCHhttps://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7

All References (7)

→
https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831Patch
→
https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55Patch
→
https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9fPatch
→
https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4fPatch
→
https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1daPatch
→
https://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aaPatch
→
https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7Patch

Quick Facts

CVE IDCVE-2026-31480
CVSS Score5.5 / 10
SeverityMEDIUM
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 22, 2026

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-31480 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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