xsk: validate metadata when processing requests

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-74707
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-22 16:16:45 UTC
Updated2026-08-22 16:16:45 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: xsk: validate metadata when processing requests The zero-copy path validates TX metadata while obtaining the descriptor context, then reads it again later when preparing the hardware request. User space can change the metadata between those operations and bypass the original validation. Validate the metadata in xsk_tx_metadata_request() and use the resulting flags snapshot for every feature check. Read request fields once so all zero-copy drivers process only values observed after successful validation.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ca4419f15abd19ba8be1e109661b60f9f5b6c9f0 5fd121971912dee2f5af1efec64462ac722deb17 git Not specified
CNA Linux Linux affected ca4419f15abd19ba8be1e109661b60f9f5b6c9f0 0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba git Not specified
CNA Linux Linux affected ca4419f15abd19ba8be1e109661b60f9f5b6c9f0 849b1664dbda1cf6c63e0fd4f9dec23782b8c851 git Not specified
CNA Linux Linux affected d9d736c416c9a85f84e15435ba82a177262e745b git Not specified
CNA Linux Linux affected 6.14.2 6.15 semver Not specified
CNA Linux Linux affected 6.15 Not specified
CNA Linux Linux unaffected 6.15 semver Not specified
CNA Linux Linux unaffected 6.18.45 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.9 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/0cc7aa6e0d19027fdd42e6fbd156267ac1e3bbba 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/849b1664dbda1cf6c63e0fd4f9dec23782b8c851 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5fd121971912dee2f5af1efec64462ac722deb17 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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