{"id":"CVE-2026-98887","summary":"wifi: mac80211_hwsim: reject undersized HWSIM_ATTR_TX_INFO","details":"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.","modified":"2026-10-28T02:36:38.008977670Z","published":"2026-10-23T11:37:44.605Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98887.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1ae85bb34fe3510659b86d6a5f8036dd498233f8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3a96bb65b4b820d8b41fa155781ec1c29e3479d4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3dc723ac78a6e4fa0fd49e27e487ed319da40a9f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/59e1f2a0242232b4a3af144ae317d3913fc09046"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b5b1234bbfa25537fb9a5c0d62c328ed4547f721"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98887.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98887"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5d44fe7c9808c56e136e59147bd932f5491520f1"},{"fixed":"3a96bb65b4b820d8b41fa155781ec1c29e3479d4"},{"fixed":"59e1f2a0242232b4a3af144ae317d3913fc09046"},{"fixed":"1ae85bb34fe3510659b86d6a5f8036dd498233f8"},{"fixed":"6f6368b20f8c9481fa7ba7b672dcb3c9f36b2695"},{"fixed":"b5b1234bbfa25537fb9a5c0d62c328ed4547f721"},{"fixed":"13edd8ea7ff2ce6a964b290ef2034cd8cbed96c7"},{"fixed":"3dc723ac78a6e4fa0fd49e27e487ed319da40a9f"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-98887.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.7.0"},{"fixed":"5.10.271"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.222"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.189"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.158"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.111"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.53"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-98887.json"}}],"schema_version":"1.9.2"}