net: rfkill: prevent unlimited numbers of rfkill events from being created

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Summary

CVECVE-2026-31670
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-24 15:16:46 UTC
Updated2026-04-27 20:10:26 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 5.5 MEDIUM from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000240000 probability, percentile 0.067850000 (date 2026-04-27)

Problem Types: NVD-CWE-noinfo

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected c64fb01627e24725d1f9d535e4426475a4415753 4bcd1615a4e2a185ae9edd27b4143d7dfa7134f4 git Not specified
CNA Linux Linux affected c64fb01627e24725d1f9d535e4426475a4415753 b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5ca git Not specified
CNA Linux Linux affected c64fb01627e24725d1f9d535e4426475a4415753 e3842779547c83150569071d9980517cc9029fc0 git Not specified
CNA Linux Linux affected c64fb01627e24725d1f9d535e4426475a4415753 673d2a3eef6e0ee9736501a150c9e4024a4e60a6 git Not specified
CNA Linux Linux affected c64fb01627e24725d1f9d535e4426475a4415753 82843afc19012a29ba863961ef494165aa1a88f4 git Not specified
CNA Linux Linux affected c64fb01627e24725d1f9d535e4426475a4415753 a8c26800e0220e1550af012f5a20e50f5c78864d git Not specified
CNA Linux Linux affected c64fb01627e24725d1f9d535e4426475a4415753 80ce4cb026f0a4c4532b6cad827b44debda6256a git Not specified
CNA Linux Linux affected c64fb01627e24725d1f9d535e4426475a4415753 ea245d78dec594372e27d8c79616baf49e98a4a1 git Not specified
CNA Linux Linux affected 2.6.31 Not specified
CNA Linux Linux unaffected 2.6.31 semver Not specified
CNA Linux Linux unaffected 5.10.253 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.203 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.169 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.135 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.82 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.23 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.13 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/ea245d78dec594372e27d8c79616baf49e98a4a1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/4bcd1615a4e2a185ae9edd27b4143d7dfa7134f4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/673d2a3eef6e0ee9736501a150c9e4024a4e60a6 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5ca 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/82843afc19012a29ba863961ef494165aa1a88f4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/a8c26800e0220e1550af012f5a20e50f5c78864d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/e3842779547c83150569071d9980517cc9029fc0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
git.kernel.org/stable/c/80ce4cb026f0a4c4532b6cad827b44debda6256a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org Patch
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