Operation on a Resource after Expiration or Release in Linux kernel - CVE-2026-98124
Published: September 28, 2026
Vulnerability identifier: #VU152327
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98124
CWE-ID: CWE-672
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose stale file contents.
The vulnerability exists due to improper cache invalidation in FS-Cache handling for SMB client server-side range operations when performing server-side range operations on a file. A local user can perform a server-side range operation and read the affected file to disclose stale file contents.
FS-Cache must be enabled on a CIFS mount with an active CacheFiles backend.
Affected software
Linux kernel
How to mitigate CVE-2026-98124
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3