CVE-2026-98161

medium

In the Linux kernel, the following vulnerability has been resolved: nvdimm: pmem: keep PREFLUSH before data writes pmem_submit_bio() records a REQ_PREFLUSH e…

Vendor / product: Linux — linux kernel

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.

CVSS

5.5

5.5 (CVSS v3.1)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity source: NVD CVSS v3.1 (nvd@nist.gov)

Timeline (UTC)

Published: 2026-09-25 14:17

Modified: 2026-10-21 13:21

NVD status: Modified

Last synced 2 days ago

Verified against the source API 2026-10-27 06:55 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

linux / linux_kernel ≥5.3 <6.18.52, ≥6.19 <7.2.6

Weakness classification (CWE)

CWE-754

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Patch / mitigation: https://git.kernel.org/stable/c/72561ca1ab96f0f0f32737a6171641e05a318538

Patch / mitigation: https://git.kernel.org/stable/c/770a90c2127220f0fc194ce909ad4f0842e141cb

Patch / mitigation: https://git.kernel.org/stable/c/c644a2f8fef5618fcf453c591177700fd07dd024

References

https://git.kernel.org/stable/c/22d1f4dcdc9c6d0295c6db0c8933126098b14e05 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/72561ca1ab96f0f0f32737a6171641e05a318538 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/770a90c2127220f0fc194ce909ad4f0842e141cb 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/c644a2f8fef5618fcf453c591177700fd07dd024 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/d34c30bc994328d9cf6749b2e9a32aabd08fd076 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:55 UTC · record ↗

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CVE-2026-98161

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Weakness classification (CWE)

Mitigation & advisories

References

Data sources

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