{"id":"CVE-2024-35811","revision":"b4a304d657d64ad4931fa6c39e0e075a","records":[{"revision":"b4a304d657d64ad4931fa6c39e0e075a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-35811","aliases":[],"title":"wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach\n\nThis is the candidate patch of CVE-2023-47233 :\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-47233\n\nIn brcm80211 driver,it starts with the following invoking chain\nto start init a timeout worker:\n\n->brcmf_usb_probe\n  ->brcmf_usb_probe_cb\n    ->brcmf_attach\n      ->brcmf_bus_started\n        ->brcmf_cfg80211_attach\n          ->wl_init_priv\n            ->brcmf_init_escan\n              ->INIT_WORK(&cfg->escan_timeout_work,\n\t\t  brcmf_cfg80211_escan_timeout_worker);\n\nIf we disconnect the USB by hotplug, it will call\nbrcmf_usb_disconnect to make cleanup. The invoking chain is :\n\nbrcmf_usb_disconnect\n  ->brcmf_usb_disconnect_cb\n    ->brcmf_detach\n      ->brcmf_cfg80211_detach\n        ->kfree(cfg);\n\nWhile the timeout woker may still be running. This will cause\na use-after-free bug on cfg in brcmf_cfg80211_escan_timeout_worker.\n\nFix it by deleting the timer and canceling the worker in\nbrcmf_cfg80211_detach.\n\n[arend.vanspriel@broadcom.com: keep timer delete as is and cancel work just before free]","state":0,"publishedAt":"2024-05-17T13:23:17.508+00:00","modifiedAt":"2026-10-15T00:40:54.307+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"e756af5b30b008f6ffcfebf8ad0b477f6f225b62\",\n                            \"lessThan\": \"202c503935042272e2f9e1bb549d5f69a8681169\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e756af5b30b008f6ffcfebf8ad0b477f6f225b62\",\n                            \"lessThan\": \"8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e756af5b30b008f6ffcfebf8ad0b477f6f225b62\",\n                            \"lessThan\": \"bacb8c3ab86dcd760c15903fcee58169bc3026aa\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e756af5b30b008f6ffcfebf8ad0b477f6f225b62\",\n                            \"lessThan\": \"8c36205123dc57349b59b4f1a2301eb278cbc731\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e756af5b30b008f6ffcfebf8ad0b477f6f225b62\",\n                            \"lessThan\": \"0b812f706fd7090be74812101114a0e165b36744\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e756af5b30b008f6ffcfebf8ad0b477f6f225b62\",\n                            \"lessThan\": \"190794848e2b9d15de92d502b6ac652806904f5a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e756af5b30b008f6ffcfebf8ad0b477f6f225b62\",\n                            \"lessThan\": \"6678a1e7d896c00030b31491690e8ddc9a90767a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e756af5b30b008f6ffcfebf8ad0b477f6f225b62\",\n                            \"lessThan\": \"0a7591e14a8da794d0b93b5d1c6254ccb23adacb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"e756af5b30b008f6ffcfebf8ad0b477f6f225b62\",\n                            \"lessThan\": \"0f7352557a35ab7888bc7831411ec8a3cbe20d78\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"4.19.312\",\n                            \"lessThanOrEqual\": \"4.19.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.4.274\",\n                            \"lessThanOrEqual\": \"5.4.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.215\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.154\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.84\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.24\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.7.12\",\n                            \"lessThanOrEqual\": \"6.7.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.8.3\",\n                            \"lessThanOrEqual\": \"6.8.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.9\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/202c503935042272e2f9e1bb549d5f69a8681169","https://git.kernel.org/stable/c/8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1","https://git.kernel.org/stable/c/bacb8c3ab86dcd760c15903fcee58169bc3026aa","https://git.kernel.org/stable/c/8c36205123dc57349b59b4f1a2301eb278cbc731","https://git.kernel.org/stable/c/0b812f706fd7090be74812101114a0e165b36744","https://git.kernel.org/stable/c/190794848e2b9d15de92d502b6ac652806904f5a","https://git.kernel.org/stable/c/6678a1e7d896c00030b31491690e8ddc9a90767a","https://git.kernel.org/stable/c/0a7591e14a8da794d0b93b5d1c6254ccb23adacb","https://git.kernel.org/stable/c/0f7352557a35ab7888bc7831411ec8a3cbe20d78"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-35811","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-35811","identifiers":["CVE-2024-35811"]},"retained":false,"historicalAffected":[]}],"coverage":[]}