{"id":"CVE-2026-68198","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-68198","summary":"wifi: ath6kl: fix use-after-free in aggr_reset_state()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath6kl: fix use-after-free in aggr_reset_state()\n\nThe aggr_reset_state() function uses timer_delete() (non-synchronous)\nfor the aggregation timer before proceeding to delete TID state and\nbefore the structure is freed by callers like aggr_module_destroy().\n\nIf the timer callback (aggr_timeout) is executing when aggr_reset_state()\nis called, the callback will continue to access aggr_conn fields like\nrx_tid[] and stat[] which may be freed immediately after by\nkfree(aggr_info->aggr_conn) in aggr_module_destroy().\n\nAdditionally, the timer callback can re-arm itself via mod_timer() while\naggr_reset_state() is running, creating a more complex race condition.\n\nUse timer_delete_sync() instead to ensure any running timer callback\nhas completed before returning.","published":"2026-08-10T12:00:16.718Z","modified":"2026-08-14T04:04:01.111989400Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.6.151"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/18965470d41e69d3fc10eb62afae29d10f4cdfd1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/64af6534a085f49d6ed33338a19ab9cf0d0523c9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a3313111b5d9046af60b370c93eec105b27380c1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b5d618fd61b9069b4c0a6b487022dd3117ad5acc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ba7debb4dd6427386862220e8335a53a4bfc235d"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68198.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68198"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-14T04:04:01.111989400Z"}}