5.5

CVE-2026-31605: linux Divide By Zero

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-31605DEBIAN-CVE-2026-31605CGA-4jqq-3q2r-6wp8
Published 24-04-2026Last modified 14-06-2026
Open JSON

Vulnerability summary

CVE-2026-31605 is a medium (CVSS 5.5) Divide By Zero vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.5% 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
0.17%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 45 · Related 46
OPENSUSE-SU-2026:10703-1OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1

Timeline

  1. 24-04-2026
    PublishedVulnerability first disclosed.
  2. 14-06-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: fbdev: udlfb: avoid divide-by-zero on FBIOPUT_VSCREENINFO Much like commit 19f953e74356 ("fbdev: fb_pm2fb: Avoid potential divide by zero error"), we also need to prevent that same crash from happening in the udlfb driver as it uses pixclock directly when dividing, which will crash.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

+0.04 pp

From 0.13% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.17%

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

Affected systems

Ubuntu158 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-136.136 | < 7.0.0-27.27
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1061.64 | < 7.0.0-1008.8
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Chainguard8 products
  • linux-aws-6.18< 6.18.31-r0
  • linux-azure-6.18< 6.18.31-r0
  • linux-gcp-6.18< 6.18.31-r0
  • linux-qemu-6.12< 6.12.85-r0
  • linux-qemu-6.18< 6.18.31-r0
Linux2 products
  • linux≥ 59277b679f8b5ce594e367759256668eba652d0d, < 9981de9fb5ae0d3d6bc5ff5ca63350c2a3cdc564 | ≥ 59277b679f8b5ce594e367759256668eba652d0d, < fd50ab7dd4ee5bbb4aebffa76ae18484b03a8ea5 | ≥ 59277b679f8b5ce594e367759256668eba652d0d, < 828ce54b27de93bd9c67991bca5a2c76c76742de | ≥ 59277b679f8b5ce594e367759256668eba652d0d, < cce24f70090e0decb597b88bc52e8ef8efed6105 | ≥ 59277b679f8b5ce594e367759256668eba652d0d, < 03797cdee38ef19c87785622d423aabaafb71c5f | ≥ 59277b679f8b5ce594e367759256668eba652d0d, < 6de048d78f3029744778b7a2891745f3ca7c209a | ≥ 59277b679f8b5ce594e367759256668eba652d0d, < cccbf9b7fdab48ce4feb69c24f7f928aa8e4e8b8 | ≥ 59277b679f8b5ce594e367759256668eba652d0d, < afaaaa38579f1252bb42b145f6e88a955c4f73f3 | ≥ 59277b679f8b5ce594e367759256668eba652d0d, < a31e4518bec70333a0a98f2946a12b53b45fe5b9 | 2.6.34
  • linux_kernel≥ 2.6.34, < 6.6.136 | ≥ 6.7, < 6.12.83 | ≥ 6.13, < 6.18.24 | ≥ 6.19, < 6.19.14 | ≥ 7.0, < 7.0.1
Debian1 product
  • linux< 6.1.176-1 | < 6.12.85-1 | < 6.19.14-1

4 vendors · 169 products

References

46 links
Show all 46 references