{"id":"CVE-2026-98161","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvdimm: pmem: keep PREFLUSH before data writes\n\npmem_submit_bio() records a REQ_PREFLUSH error, but continues to copy the\nbio data and can later overwrite the error wit…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvdimm: pmem: keep PREFLUSH before data writes\n\npmem_submit_bio() records a REQ_PREFLUSH error, but continues to copy the\nbio data and can later overwrite the error wit…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 770a90c2127220f0fc194ce909ad4f0842e141cb","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 72561ca1ab96f0f0f32737a6171641e05a318538","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c644a2f8fef5618fcf453c591177700fd07dd024","Linux < 6.18.52","Linux < 7.2.6","Linux (all versions)"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T14:17:27.770","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98161","references":[{"url":"https://git.kernel.org/stable/c/72561ca1ab96f0f0f32737a6171641e05a318538","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/770a90c2127220f0fc194ce909ad4f0842e141cb","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c644a2f8fef5618fcf453c591177700fd07dd024","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-25T14:09:46.373Z","slug":"CVE-2026-98161","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnvdimm: pmem: keep PREFLUSH before data writes\n\npmem_submit_bio() records a REQ_PREFLUSH error, but continues to copy the\nbio data and can later overwrite the error with a successful REQ_FUA flush.\nThat lets data writes run after a failed preflush and can complete the bio\nsuccessfully despite the failed ordering barrier.\n\nRun the REQ_PREFLUSH flush synchronously before touching the bio data and\ncomplete the bio with the flush error if it fails. Keep asynchronous flush\nchaining for REQ_FUA. At that point, data copy has completed and the parent\nbio can wait for the chained flush bio.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}