SB20260424275 - Reachable assertion in Linux kernel ext4
Published: April 24, 2026
Security Bulletin ID
SB20260424275
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Reachable assertion (CVE-ID: CVE-2026-31451)
CWE-ID: CWE-617 - Reachable Assertion
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper handling of oversized inline data in ext4_read_inline_folio when reading inline data from a crafted ext4 filesystem. A local user can trigger processing of inline data whose size exceeds PAGE_SIZE to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/356227096eb66e41b23caf7045e6304877322edf
- https://git.kernel.org/stable/c/65c6c30ce6362c1c684568744ea510c921a756cd
- https://git.kernel.org/stable/c/823849a26af089ffc5dfdd2ae4b9d446b46a0cda
- https://git.kernel.org/stable/c/a7d600e04732a7d29b107c91fe3aec64cf6ce7f2
- https://git.kernel.org/stable/c/d4b3f370c3d8f7ce565d4a718572c9f7c12f77ed