5.5

CVE-2026-31670: linux

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-31670DEBIAN-CVE-2026-31670
Published 24-04-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-31670 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.12% chance of exploitation in the next 30 days, higher than 1.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.12%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 41 · Related 39
MGASA-2026-0108MGASA-2026-0110OPENSUSE-SU-2026:21388-1SUSE-SU-2026:22521-1SUSE-SU-2026:22522-1SUSE-SU-2026:22665-1

Timeline

  1. 24-04-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.12%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

0.00 pp

From 0.12% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.12%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ c64fb01627e24725d1f9d535e4426475a4415753, < 4bcd1615a4e2a185ae9edd27b4143d7dfa7134f4 | ≥ c64fb01627e24725d1f9d535e4426475a4415753, < b1e0c8d3ab58a0161db487bf5fc47adfcaf5d5ca | ≥ c64fb01627e24725d1f9d535e4426475a4415753, < e3842779547c83150569071d9980517cc9029fc0 | ≥ c64fb01627e24725d1f9d535e4426475a4415753, < 673d2a3eef6e0ee9736501a150c9e4024a4e60a6 | ≥ c64fb01627e24725d1f9d535e4426475a4415753, < 82843afc19012a29ba863961ef494165aa1a88f4 | ≥ c64fb01627e24725d1f9d535e4426475a4415753, < a8c26800e0220e1550af012f5a20e50f5c78864d | ≥ c64fb01627e24725d1f9d535e4426475a4415753, < 80ce4cb026f0a4c4532b6cad827b44debda6256a | ≥ c64fb01627e24725d1f9d535e4426475a4415753, < ea245d78dec594372e27d8c79616baf49e98a4a1 | 2.6.31
  • linux_kernel≥ 2.6.31.1, < 5.10.253 | ≥ 5.11, < 5.15.203 | ≥ 5.16, < 6.1.169 | ≥ 6.2, < 6.6.135 | ≥ 6.7, < 6.12.82 | ≥ 6.13, < 6.18.23 | ≥ 6.19, < 6.19.13 | 2.6.31 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5 | 7.0:rc6 | 7.0:rc7
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.19.13-1

3 vendors · 160 products

References

43 links
Show all 43 references