Improper Check or Handling of Exceptional Conditions in Linux kernel - CVE-2026-31514
Published: April 24, 2026
Vulnerability identifier: #VU127636
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-31514
CWE-ID: CWE-703
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper handling of short read errors in erofs file-backed mount I/O handling when processing interrupted read operations. A local user can trigger a read operation that is interrupted by a signal to cause a denial of service.
The issue occurs because unused folios in a bio can be incorrectly marked as uptodate after a short read.
How to mitigate CVE-2026-31514
Install security update from vendor's repository.