Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: nvdimm: pmem: keep PREFLUSH before data writes pmem_submit_bio() records a REQ_PREFLUSH error, but continues to copy the bio data and can later overwrite the error with a successful REQ_FUA flush. That lets data writes run after a failed preflush and can complete the bio successfully despite the failed ordering barrier. Run the REQ_PREFLUSH flush synchronously before touching the bio data and complete the bio with the flush error if it fails. Keep asynchronous flush chaining for REQ_FUA. At that point, data copy has completed and the parent bio can wait for the chained flush bio.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.3, < 6.18.52 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/72561ca1ab96f0f0f32737a6171641e05a318538Patch
- https://git.kernel.org/stable/c/770a90c2127220f0fc194ce909ad4f0842e141cbPatch
- https://git.kernel.org/stable/c/c644a2f8fef5618fcf453c591177700fd07dd024Patch
- https://git.kernel.org/stable/c/d34c30bc994328d9cf6749b2e9a32aabd08fd076
FAQ
What is CVE-2026-98161?
CVE-2026-98161 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: nvdimm: pmem: keep PREFLUSH before data writes pmem_submit_bio() records a REQ_PREFLUSH error, but continues to copy the bio data ...
How severe is CVE-2026-98161?
CVE-2026-98161 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-98161?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.