wifi: cfg80211: reject duplicate wiphy cipher suite entries

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-97518
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-24 17:17:29 UTC
Updated2026-09-28 06:16:37 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: reject duplicate wiphy cipher suite entries Duplicate entries in wiphy->cipher_suites do not describe any additional capability, but cfg80211 currently accepts them and leaves individual consumers to deal with them. One such consumer is the WEXT compatibility code, which appends a WEP key length for each WEP cipher entry it sees. Repeated WEP entries can therefore overflow the fixed iw_range::encoding_size array returned by SIOCGIWRANGE. Reject duplicate cipher suite entries in wiphy_register() instead. This keeps the cipher suite invariant in one place and makes malformed wiphy descriptions fail early with -EINVAL, rather than relying on a single cfg80211 user to handle duplicates correctly.

Risk And Classification

EPSS: 0.001550000 probability, percentile 0.039090000 (date 2026-09-29)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196 1305f8b925fe92edf5fec183588dfc7db719180b git Not specified
CNA Linux Linux affected 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196 4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923 git Not specified
CNA Linux Linux affected 2ab658f9ce218ae93b3d2db2b3fe68bfefb81196 7187d145d9042b037e4f10538f70cf95e380219f git Not specified
CNA Linux Linux affected 2.6.32 Not specified
CNA Linux Linux unaffected 2.6.32 semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/1305f8b925fe92edf5fec183588dfc7db719180b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7187d145d9042b037e4f10538f70cf95e380219f 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4cbb2360f4d8c29e67bc7a8bf6ba0ae096583923 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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