{"id":"CVE-2026-98196","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmsmac: fix UAF in brcms_free_timer()\n\nbrcms_free_timer() calls brcms_del_timer() which uses the non-synchronous\ncancel_delayed_work() to cancel the timer's und…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmsmac: fix UAF in brcms_free_timer()\n\nbrcms_free_timer() calls brcms_del_timer() which uses the non-synchronous\ncancel_delayed_work() to cancel the timer's und…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 5b435de0d786869c95d1962121af0d7df2542009 < 10eeb0b29fd7f52487c9ae573e8d79c210a0095d","Linux >= 5b435de0d786869c95d1962121af0d7df2542009 < 74acccc928851f69184271832d690607877122af","Linux >= 5b435de0d786869c95d1962121af0d7df2542009 < 050d2486e8ed2c0a23b87249ccd23e8072721391","Linux >= 5b435de0d786869c95d1962121af0d7df2542009 < 856dabd5f2617efb23c043be9e1b22a9e6e97c41","Linux >= 5b435de0d786869c95d1962121af0d7df2542009 < 2a4841ff0b74b495cddd31ae324e922217fc2f13","Linux >= 5b435de0d786869c95d1962121af0d7df2542009 < 1edb3ddd261e973a4d577c0547e63bfa25a8170d","Linux >= 5b435de0d786869c95d1962121af0d7df2542009 < 777cb6bba59e875b16a1d8897a483a5fecfcd5d2","Linux >= 5b435de0d786869c95d1962121af0d7df2542009 < 1eeca1d5e0920fbdad6449768fd2d4364e714180","Linux 3.2"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T09:18:05.113","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-98196","references":[{"url":"https://git.kernel.org/stable/c/050d2486e8ed2c0a23b87249ccd23e8072721391","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/10eeb0b29fd7f52487c9ae573e8d79c210a0095d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1edb3ddd261e973a4d577c0547e63bfa25a8170d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1eeca1d5e0920fbdad6449768fd2d4364e714180","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2a4841ff0b74b495cddd31ae324e922217fc2f13","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/74acccc928851f69184271832d690607877122af","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/777cb6bba59e875b16a1d8897a483a5fecfcd5d2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/856dabd5f2617efb23c043be9e1b22a9e6e97c41","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T08:50:17.448Z","slug":"CVE-2026-98196","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmsmac: fix UAF in brcms_free_timer()\n\nbrcms_free_timer() calls brcms_del_timer() which uses the non-synchronous\ncancel_delayed_work() to cancel the timer's underlying delayed work.  If\nthe work callback (_brcms_timer) is already running, cancel_delayed_work()\nreturns false without waiting, and brcms_free_timer() proceeds to kfree(t)\nwhile the callback still accesses t through container_of().\n\nAdd an explicit cancel_delayed_work_sync() after brcms_del_timer() to\nguarantee that any in-flight callback has completed before the timer\nstructure is freed.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}