Skip to main content
VulnerabilityPublished Updated

CVE-2026-31670: Linux kernel · net: rfkill: prevent unlimited numbers of rfkill events from being created

Affects Linux kernelSource CVE Database V5

0
Compare

Not known to be exploited · fixed in ea245d78dec594372e27d8c79616baf49e98a4a1 : update Linux kernel when convenient.

Data as of 6 Nov 2026, 16:04 UTC

Severity
Unrated

Rated by Threat Radar · 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, 2026-11-06.

Patch
Available – fixed in ea245d78dec594372e27d8c79616baf49e98a4a1, e3842779547c83150569071d9980517cc9029fc0, b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5ca +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 6 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ c64fb01627e24725d1f9d535e4426475a4415753, < ea245d78dec594372e27d8c79616baf49e98a4a1
Fixed in
  • ea245d78dec594372e27d8c79616baf49e98a4a1
LinuxLinuxAffected
  • ≥ c64fb01627e24725d1f9d535e4426475a4415753, < e3842779547c83150569071d9980517cc9029fc0
Fixed in
  • e3842779547c83150569071d9980517cc9029fc0
LinuxLinuxAffected
  • ≥ c64fb01627e24725d1f9d535e4426475a4415753, < b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5ca
Fixed in
  • b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5ca
LinuxLinuxAffected
  • ≥ c64fb01627e24725d1f9d535e4426475a4415753, < a8c26800e0220e1550af012f5a20e50f5c78864d
Fixed in
  • a8c26800e0220e1550af012f5a20e50f5c78864d
LinuxLinuxAffected
  • ≥ c64fb01627e24725d1f9d535e4426475a4415753, < 82843afc19012a29ba863961ef494165aa1a88f4
Fixed in
  • 82843afc19012a29ba863961ef494165aa1a88f4
LinuxLinuxAffected
  • ≥ c64fb01627e24725d1f9d535e4426475a4415753, < 673d2a3eef6e0ee9736501a150c9e4024a4e60a6
Fixed in
  • 673d2a3eef6e0ee9736501a150c9e4024a4e60a6

Description

In the Linux kernel, the following vulnerability has been resolved: net: rfkill: prevent unlimited numbers of rfkill events from being created Userspace can create an unlimited number of rfkill events if the system is so configured, while not consuming them from the rfkill file descriptor, causing a potential out of memory situation. Prevent this from bounding the number of pending rfkill events at a "large" number (i.e. 1000) to prevent abuses like this.

References

Community reviews

Loading reviews…