{"id":"CVE-2022-49416","summary":"wifi: mac80211: fix use-after-free in chanctx code","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: fix use-after-free in chanctx code\n\nIn ieee80211_vif_use_reserved_context(), when we have an\nold context and the new context's replace_state is set to\nIEEE80211_CHANCTX_REPLACE_NONE, we free the old context\nin ieee80211_vif_use_reserved_reassign(). Therefore, we\ncannot check the old_ctx anymore, so we should set it to\nNULL after this point.\n\nHowever, since the new_ctx replace state is clearly not\nIEEE80211_CHANCTX_REPLACES_OTHER, we're not going to do\nanything else in this function and can just return to\navoid accessing the freed old_ctx.","modified":"2026-03-20T12:22:25.317759Z","published":"2025-02-26T02:12:37.173Z","related":["SUSE-SU-2025:1027-1","SUSE-SU-2025:1176-1","SUSE-SU-2025:1183-1","SUSE-SU-2025:1194-1","SUSE-SU-2025:1241-1","SUSE-SU-2025:1263-1","SUSE-SU-2025:1293-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49416.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/265bec4779a38b65e86a25120370f200822dfa76"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2965c4cdf7ad9ce0796fac5e57debb9519ea721e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4ba81e794f0fad6234f644c2da1ae14d5b95e1c4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6118bbdf69f4718b02d26bbcf2e497eb66004331"},{"type":"WEB","url":"https://git.kernel.org/stable/c/82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/88cc8f963febe192d6ded9df7217f92f380b449a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/9f1e5cc85ad77e52f54049a94db0407445ae2a34"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b79110f2bf6022e60e590d2e094728a8eec3e79e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49416.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49416"},{"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":"5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f"},{"fixed":"88cc8f963febe192d6ded9df7217f92f380b449a"},{"fixed":"4ba81e794f0fad6234f644c2da1ae14d5b95e1c4"},{"fixed":"9f1e5cc85ad77e52f54049a94db0407445ae2a34"},{"fixed":"265bec4779a38b65e86a25120370f200822dfa76"},{"fixed":"6118bbdf69f4718b02d26bbcf2e497eb66004331"},{"fixed":"b79110f2bf6022e60e590d2e094728a8eec3e79e"},{"fixed":"82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c"},{"fixed":"4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c"},{"fixed":"2965c4cdf7ad9ce0796fac5e57debb9519ea721e"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49416.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}