wifi: mt76: mt7925: guard link STA in decap offload

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-68311
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-10 13:20:20 UTC
Updated2026-08-10 13:20:20 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925: guard link STA in decap offload mt7925_sta_set_decap_offload() iterates over the vif valid_links mask when updating decap offload state for an MLO station. The station may not have a link STA for every valid link of the vif, so mt792x_sta_to_link() can return NULL for a link that belongs to the vif but not to the station. The function currently dereferences mlink before checking whether the link WCID is ready. If mlink is NULL, setting or clearing MT_WCID_FLAG_HDR_TRANS dereferences a NULL pointer. Skip links without a station link before touching mlink->wcid.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected b859ad65309a5f1654e8b284de582831fc88e2d8 1e608cae1ba0b4a600b752efa223fd2be376b143 git Not specified
CNA Linux Linux affected b859ad65309a5f1654e8b284de582831fc88e2d8 f1ee53e08fdd2906e90c6a6d71e1368fcd52bfc3 git Not specified
CNA Linux Linux affected b859ad65309a5f1654e8b284de582831fc88e2d8 d86883f7e8f03a5b81b4e59f2c0b6c05f79e01fd git Not specified
CNA Linux Linux affected b859ad65309a5f1654e8b284de582831fc88e2d8 96ea44f2269f30364cffa054ee3a87e595bef0d4 git Not specified
CNA Linux Linux affected 6.11 Not specified
CNA Linux Linux unaffected 6.11 semver Not specified
CNA Linux Linux unaffected 6.12.101 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.42 6.18.* semver Not specified
CNA Linux Linux unaffected 7.1.6 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc5 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f1ee53e08fdd2906e90c6a6d71e1368fcd52bfc3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d86883f7e8f03a5b81b4e59f2c0b6c05f79e01fd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/1e608cae1ba0b4a600b752efa223fd2be376b143 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/96ea44f2269f30364cffa054ee3a87e595bef0d4 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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