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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 770a90c2127220f0fc194ce909ad4f0842e141cb
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < 72561ca1ab96f0f0f32737a6171641e05a318538
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 affected < c644a2f8fef5618fcf453c591177700fd07dd024
0 affected < 6.18.52
0 affected < 7.2.6
Linux Linux affected
Version Status Constraints
6.18.52 unaffected ≤ 6.18.*
7.2.6 unaffected ≤ 7.2.*
7.3-rc1 unaffected ≤ *

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Fixes

Solution

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Workaround

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References
Link Providers
https://git.kernel.org/stable/c/72561ca1ab96f0f0f32737a6171641e05a318538 cve-icon
https://git.kernel.org/stable/c/770a90c2127220f0fc194ce909ad4f0842e141cb cve-icon
https://git.kernel.org/stable/c/c644a2f8fef5618fcf453c591177700fd07dd024 cve-icon
History

Fri, 25 Sep 2026 13:30:00 +0000

Type Values Removed Values Added
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.
Title nvdimm: pmem: keep PREFLUSH before data writes
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-09-25T13:06:51.138Z

Reserved: 2026-09-25T10:25:14.321Z

Link: CVE-2026-98161

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses

No weakness.