Improper Check for Unusual or Exceptional Conditions in Linux kernel - CVE-2026-98161
Published: September 28, 2026
Vulnerability identifier: #VU152269
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98161
CWE-ID: CWE-754
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause data writes to complete despite a failed ordering barrier.
The vulnerability exists due to improper handling of flush errors in pmem_submit_bio() when processing bio requests with REQ_PREFLUSH and REQ_FUA flags. A local user can submit a bio request with these flags after a preflush failure to cause data writes to complete despite a failed ordering barrier.
Affected software
Linux kernel
How to mitigate CVE-2026-98161
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3