{"id":"CVE-2026-68198","title":"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 proceedin…","summary":"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 proceedin…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","published":"2026-08-10","updated":"2026-08-23","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-68198","references":[{"url":"https://git.kernel.org/stable/c/17ff29cd8dbc977c97788a5f7c011ec807b58242","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/18965470d41e69d3fc10eb62afae29d10f4cdfd1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2132a6db05846dd2318857d00e0c1291f9e41b29","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/64af6534a085f49d6ed33338a19ab9cf0d0523c9","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a1bac650b2d6b1baab1f3e78e2e007a6e2948dde","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a3313111b5d9046af60b370c93eec105b27380c1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b5d618fd61b9069b4c0a6b487022dd3117ad5acc","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ba7debb4dd6427386862220e8335a53a4bfc235d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00274,"epssPercentile":0.19995,"ingestedAt":"2026-08-23T13:48:06.611Z","slug":"CVE-2026-68198","body":"## Overview\n\nIn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}