iomap: release pages on atomic dio size mismatch

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-72370
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-15 06:22:10 UTC
Updated2026-08-17 06:18:41 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: iomap: release pages on atomic dio size mismatch If bio_iov_iter_get_pages() or the bounce helper succeeds but builds a short bio, the REQ_ATOMIC size check rejects it before submission. The old error path only dropped the bio reference, leaving any pages already attached to the bio unreleased. Release or unbounce the pages before falling through to out_put_bio on this error path. This bug was reported by sashiko: https://sashiko.dev/#/patchset/20260608073134.95964-1-changfengnan%40bytedance.com

Risk And Classification

EPSS: 0.001980000 probability, percentile 0.098980000 (date 2026-08-17)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 9e0933c21c128d6d8ac4d8aae0babaf9a43100b8 27ddd3442fc6f698fb8577c7cfb243ddd81ea8c0 git Not specified
CNA Linux Linux affected 9e0933c21c128d6d8ac4d8aae0babaf9a43100b8 681e452683b69a8e1a571cba0f238f8ceacf55d2 git Not specified
CNA Linux Linux affected 6.13 Not specified
CNA Linux Linux unaffected 6.13 semver Not specified
CNA Linux Linux unaffected 7.1.5 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/681e452683b69a8e1a571cba0f238f8ceacf55d2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/27ddd3442fc6f698fb8577c7cfb243ddd81ea8c0 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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