wifi: mac80211: don't allow injecting frames wider than the chanctx

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-98329
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 09:18:25 UTC
Updated2026-10-06 09:18:25 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't allow injecting frames wider than the chanctx Frames injected on a monitor interface can carry a radiotap field requesting a bandwidth, which mac80211 passes down to the driver regardless of the the actual operational bandwidth. If the bandwidth requested is too wide, that triggers a warning in hwsim: WARN_ON(hwsim_get_chanwidth(bw) > hwsim_get_chanwidth(confbw)) Drop such frames entirely instead since they cannot be sent.

Risk And Classification

EPSS: 0.001750000 probability, percentile 0.063870000 (date 2026-10-06)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 646e76bb5daf4ca38438c69ffb72cccb605f3466 a5c715eda066cba5ce3372759188ba8636dca629 git Not specified
CNA Linux Linux affected 646e76bb5daf4ca38438c69ffb72cccb605f3466 73f48f7e16cadfc74f444ccd10c1d3ae253e2e27 git Not specified
CNA Linux Linux affected 646e76bb5daf4ca38438c69ffb72cccb605f3466 c69718519a81e87284494d0c6e6eb7bdd834707a git Not specified
CNA Linux Linux affected 646e76bb5daf4ca38438c69ffb72cccb605f3466 e14bf37bb2b3853012ff160131d1c6233f7a9cc9 git Not specified
CNA Linux Linux affected 4.7 Not specified
CNA Linux Linux unaffected 4.7 semver Not specified
CNA Linux Linux unaffected 6.12.112 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.54 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.8 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/a5c715eda066cba5ce3372759188ba8636dca629 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/c69718519a81e87284494d0c6e6eb7bdd834707a 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/e14bf37bb2b3853012ff160131d1c6233f7a9cc9 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/73f48f7e16cadfc74f444ccd10c1d3ae253e2e27 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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