{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98887","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.378Z","datePublished":"2026-10-23T11:37:44.605Z","dateUpdated":"2026-10-26T06:56:11.864Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-26T06:56:11.864Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO\n\nhwsim_tx_info_frame_received_nl() casts the HWSIM_ATTR_TX_INFO payload\nto a struct hwsim_tx_rate * and unconditionally reads\nIEEE80211_TX_MAX_RATES entries (8 bytes) from it. The policy only bounds\nthe attribute from above (NLA_BINARY .len is a maximum) and the op sets\nGENL_DONT_VALIDATE_STRICT, so a short or zero-length attribute is\naccepted and the loop reads past the payload.\n\nRequire the exact length in the policy, so a malformed attribute is\nrejected before the handler runs."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"versions":[{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"3a96bb65b4b820d8b41fa155781ec1c29e3479d4","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"59e1f2a0242232b4a3af144ae317d3913fc09046","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"1ae85bb34fe3510659b86d6a5f8036dd498233f8","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"b5b1234bbfa25537fb9a5c0d62c328ed4547f721","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7","status":"affected","versionType":"git"},{"version":"5d44fe7c9808c56e136e59147bd932f5491520f1","lessThan":"3dc723ac78a6e4fa0fd49e27e487ed319da40a9f","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/virtual/mac80211_hwsim_main.c"],"versions":[{"version":"5.7","status":"affected"},{"version":"0","lessThan":"5.7","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.7","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4"},{"url":"https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046"},{"url":"https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8"},{"url":"https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695"},{"url":"https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721"},{"url":"https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7"},{"url":"https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f"}],"title":"wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO","x_generator":{"engine":"bippy-1.2.0"}}}}