wifi: mac80211: keep fallback association elements alive

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98704
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-18 16:17:23 UTC
Updated2026-10-21 13:21:38 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: keep fallback association elements alive Associating to a non-transmitted MBSSID profile reads freed memory while determining the operating channel and applying HT capabilities. When an association response omits WMM, HT, or VHT information, ieee80211_assoc_config_link() parses the cached BSS IEs and copies the missing element pointers out of that fallback parse. For a non-transmitted MBSSID profile those pointers refer to merged-profile storage owned by the parse object, and the fallback block frees that object at its end. The copied pointers are used afterwards to determine the operating channel, configure bandwidth, and apply HT capabilities. Keep the fallback parse result alive until association setup finishes. [reorder variable declaration]

Risk And Classification

EPSS: 0.001680000 probability, percentile 0.057340000 (date 2026-10-21)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 5023b14cf4df4d22e1a80738167f3438c9e62e5f de77b0f68142147e74fac1c497dbe1f93daeeed9 git Not specified
CNA Linux Linux affected 5023b14cf4df4d22e1a80738167f3438c9e62e5f 1d9644753d46c86b4e5c05bd6d9d35339ea27331 git Not specified
CNA Linux Linux affected 5023b14cf4df4d22e1a80738167f3438c9e62e5f d0183cd1f6a2dba9e63be20af2f65093c9c8d121 git Not specified
CNA Linux Linux affected 5023b14cf4df4d22e1a80738167f3438c9e62e5f 0878594c5806dd29fa5e16cc026ce19158afdad2 git Not specified
CNA Linux Linux affected 5023b14cf4df4d22e1a80738167f3438c9e62e5f a10a2f80476d166fd81c361ec0319493671b694e git Not specified
CNA Linux Linux affected 5.2 Not specified
CNA Linux Linux unaffected 5.2 semver Not specified
CNA Linux Linux unaffected 6.6.160 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.113 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.56 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.10 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/1d9644753d46c86b4e5c05bd6d9d35339ea27331 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d0183cd1f6a2dba9e63be20af2f65093c9c8d121 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/0878594c5806dd29fa5e16cc026ce19158afdad2 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a10a2f80476d166fd81c361ec0319493671b694e 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/de77b0f68142147e74fac1c497dbe1f93daeeed9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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