Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c5d4355d10d414a96ca870b731756b89d068d57a before 22d1f4dcdc9c6d0295c6db0c8933126098b14e05; affected c5d4355d10d414a96ca870b731756b89d068d57a before d34c30bc994328d9cf6749b2e9a32aabd08fd076; affected c5d4355d10d414a96ca870b731756b89d068d57a before 770a90c2127220f0fc194ce909ad4f0842e141cb; affected c5d4355d10d414a96ca870b731756b89d068d57a before 72561ca1ab96f0f0f32737a6171641e05a318538; affected c5d4355d10d414a96ca870b731756b89d068d57a before c644a2f8fef5618fcf453c591177700fd07dd024 |
| Linux / Linux | affected 5.3; unaffected 0 before 5.3; unaffected 6.6.160 through 6.6.*; unaffected 6.12.112 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
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