5.5

CVE-2026-31451: linux Reachable Assertion

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-31451DEBIAN-CVE-2026-31451
Published 22-04-2026Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2026-31451 is a medium (CVSS 5.5) Reachable Assertion vulnerability in linux. EPSS estimates a 0.13% chance of exploitation in the next 30 days, higher than 2.2% 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
0.13%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 22 · Related 20
MGASA-2026-0108MGASA-2026-0110USN-8567-1USN-8574-1USN-8574-2USN-8574-3

Timeline

  1. 22-04-2026
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: replace BUG_ON with proper error handling in ext4_read_inline_folio Replace BUG_ON() with proper error handling when inline data size exceeds PAGE_SIZE. This prevents kernel panic and allows the system to continue running while properly reporting the filesystem corruption. The error is logged via ext4_error_inode(), the buffer head is released to prevent memory leak, and -EFSCORRUPTED is returned to indicate filesystem corruption.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.13%

Chance of exploitation in the next 30 days

Percentile

2%

Versus all other CVEs

30-day change

+0.01 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.13%

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

Ubuntu157 products
  • linuxAll versions (No fix recorded) | < 5.15.0-198.208 | < 6.8.0-136.136
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1117.124 | < 6.8.0-1061.64
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 46c7f254543dedcf134ad05091ed2b935a9a597d, < 3462a3f0716d27af51896dc8688bcf0628fb17ee | ≥ 46c7f254543dedcf134ad05091ed2b935a9a597d, < 636e8d85a36ab6c31aafd04ee66a69b18eebee7b | ≥ 46c7f254543dedcf134ad05091ed2b935a9a597d, < af25a6affeac4919e8d8c5cccc01a9d53478447e | ≥ 46c7f254543dedcf134ad05091ed2b935a9a597d, < 65c6c30ce6362c1c684568744ea510c921a756cd | ≥ 46c7f254543dedcf134ad05091ed2b935a9a597d, < d4b3f370c3d8f7ce565d4a718572c9f7c12f77ed | ≥ 46c7f254543dedcf134ad05091ed2b935a9a597d, < 823849a26af089ffc5dfdd2ae4b9d446b46a0cda | ≥ 46c7f254543dedcf134ad05091ed2b935a9a597d, < a7d600e04732a7d29b107c91fe3aec64cf6ce7f2 | ≥ 46c7f254543dedcf134ad05091ed2b935a9a597d, < 356227096eb66e41b23caf7045e6304877322edf | 3.8
  • linux_kernel≥ 3.8, < 6.6.131 | ≥ 6.7, < 6.12.80 | ≥ 6.13, < 6.18.21 | ≥ 6.19, < 6.19.11 | 7.0:rc1 | 7.0:rc2 | 7.0:rc3 | 7.0:rc4 | 7.0:rc5
Debian1 product
  • linux< 6.1.177-1 | < 6.12.85-1 | < 6.19.11-1

3 vendors · 160 products

References

34 links
Show all 34 references