SB2026092820 - Improper Check for Unusual or Exceptional Conditions in Linux kernel nvdimm driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-98161)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

CVSSv4: 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]

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.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/72561ca1ab96f0f0f32737a6171641e05a318538
• https://git.kernel.org/stable/c/770a90c2127220f0fc194ce909ad4f0842e141cb
• https://git.kernel.org/stable/c/c644a2f8fef5618fcf453c591177700fd07dd024