UNKNOWN NVD
CVE-2026-98161
In the Linux kernel, the following vulnerability has been resolved: nvdimm: pmem: keep PREFLUSH before data writes pmem_submit_bio() records a REQ_PREFLUSH er
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.
References
- https://git.kernel.org/stable/c/72561ca1ab96f0f0f32737a6171641e05a318538
- https://git.kernel.org/stable/c/770a90c2127220f0fc194ce909ad4f0842e141cb
- https://git.kernel.org/stable/c/c644a2f8fef5618fcf453c591177700fd07dd024
This unknown severity vulnerability was published on 2026-09-25 via NVD.
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