Race condition in Linux kernel - CVE-2026-89836
Published: September 17, 2026
Vulnerability identifier: #VU150448
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89836
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service and corrupt page state.
The vulnerability exists due to a race condition in f2fs_get_read_data_folio() when invalidating a large folio from the page cache. A local user can trigger concurrent truncation or folio splitting to cause a denial of service and corrupt page state.
Affected software
Linux kernel
How to mitigate CVE-2026-89836
Install security update from vendor's repository.