Infinite loop in Linux kernel - CVE-2026-93198
Published: September 18, 2026
Vulnerability identifier: #VU150792
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-93198
CWE-ID: CWE-835
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper validation of a persisted dirty_tail chain in the dm-pcache cache loader when loading a crafted cache image. A local user can provide a crafted cache image containing a nonterminating last-kset chain to cause a denial of service.
The persisted on-media fields are authenticated only by a crc32c with a fixed seed.
Affected software
Linux kernel
How to mitigate CVE-2026-93198
Install security update from vendor's repository.