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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c5d4355d10d414a96ca870b731756b89d068d57a to < 22d1f4dcdc9c6d0295c6db0c8933126098b14e05affectedc5d4355d10d414a96ca870b731756b89d068d57a to < d34c30bc994328d9cf6749b2e9a32aabd08fd076affectedc5d4355d10d414a96ca870b731756b89d068d57a to < 770a90c2127220f0fc194ce909ad4f0842e141cbaffectedc5d4355d10d414a96ca870b731756b89d068d57a to < 72561ca1ab96f0f0f32737a6171641e05a318538affectedc5d4355d10d414a96ca870b731756b89d068d57a to < c644a2f8fef5618fcf453c591177700fd07dd024affected
Linux Linux
Default version status: affected
5.3affected0 to < 5.3unaffected6.6.160 to ≤ 6.6.*unaffected6.12.112 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/22d1f4dcdc9c6d0295c6db0c8933126098b14e05 ↗
- https://git.kernel.org/stable/c/d34c30bc994328d9cf6749b2e9a32aabd08fd076 ↗
- https://git.kernel.org/stable/c/770a90c2127220f0fc194ce909ad4f0842e141cb ↗
- https://git.kernel.org/stable/c/72561ca1ab96f0f0f32737a6171641e05a318538 ↗
- https://git.kernel.org/stable/c/c644a2f8fef5618fcf453c591177700fd07dd024 ↗