cve-2024-35811
Vulnerability from cvelistv5
Published
2024-05-17 13:23
Modified
2024-12-19 08:55
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: Fix use-after-free bug in brcmf_cfg80211_detach This is the candidate patch of CVE-2023-47233 : https://nvd.nist.gov/vuln/detail/CVE-2023-47233 In brcm80211 driver,it starts with the following invoking chain to start init a timeout worker: ->brcmf_usb_probe ->brcmf_usb_probe_cb ->brcmf_attach ->brcmf_bus_started ->brcmf_cfg80211_attach ->wl_init_priv ->brcmf_init_escan ->INIT_WORK(&cfg->escan_timeout_work, brcmf_cfg80211_escan_timeout_worker); If we disconnect the USB by hotplug, it will call brcmf_usb_disconnect to make cleanup. The invoking chain is : brcmf_usb_disconnect ->brcmf_usb_disconnect_cb ->brcmf_detach ->brcmf_cfg80211_detach ->kfree(cfg); While the timeout woker may still be running. This will cause a use-after-free bug on cfg in brcmf_cfg80211_escan_timeout_worker. Fix it by deleting the timer and canceling the worker in brcmf_cfg80211_detach. [arend.vanspriel@broadcom.com: keep timer delete as is and cancel work just before free]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0a7591e14a8da794d0b93b5d1c6254ccb23adacbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b812f706fd7090be74812101114a0e165b36744Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f7352557a35ab7888bc7831411ec8a3cbe20d78Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/190794848e2b9d15de92d502b6ac652806904f5aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/202c503935042272e2f9e1bb549d5f69a8681169Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6678a1e7d896c00030b31491690e8ddc9a90767aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8c36205123dc57349b59b4f1a2301eb278cbc731Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bacb8c3ab86dcd760c15903fcee58169bc3026aaPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0a7591e14a8da794d0b93b5d1c6254ccb23adacbPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0b812f706fd7090be74812101114a0e165b36744Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0f7352557a35ab7888bc7831411ec8a3cbe20d78Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/190794848e2b9d15de92d502b6ac652806904f5aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/202c503935042272e2f9e1bb549d5f69a8681169Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6678a1e7d896c00030b31491690e8ddc9a90767aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8c36205123dc57349b59b4f1a2301eb278cbc731Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/bacb8c3ab86dcd760c15903fcee58169bc3026aaPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlMailing List
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlMailing List
Impacted products
Vendor Product Version
Linux Linux Version: e756af5b30b008f6ffcfebf8ad0b477f6f225b62
Version: e756af5b30b008f6ffcfebf8ad0b477f6f225b62
Version: e756af5b30b008f6ffcfebf8ad0b477f6f225b62
Version: e756af5b30b008f6ffcfebf8ad0b477f6f225b62
Version: e756af5b30b008f6ffcfebf8ad0b477f6f225b62
Version: e756af5b30b008f6ffcfebf8ad0b477f6f225b62
Version: e756af5b30b008f6ffcfebf8ad0b477f6f225b62
Version: e756af5b30b008f6ffcfebf8ad0b477f6f225b62
Version: e756af5b30b008f6ffcfebf8ad0b477f6f225b62
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   Linux Linux Version: 3.7
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      nvd: "{\"cve\":{\"id\":\"CVE-2024-35811\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-05-17T14:15:15.177\",\"lastModified\":\"2025-01-14T14:23:38.660\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: brcmfmac: corregido el error de use after free en brcmf_cfg80211_detach Este es el parche candidato de CVE-2023-47233: https://nvd.nist.gov/vuln/detail /CVE-2023-47233 En el controlador brcm80211, comienza con la siguiente cadena de invocación para iniciar un trabajador de tiempo de espera: ->brcmf_usb_probe ->brcmf_usb_probe_cb ->brcmf_attach ->brcmf_bus_started ->brcmf_cfg80211_attach ->wl_init_priv ->brcmf_init_escan ->INIT_WORK(&cfg ->escan_timeout_work, brcmf_cfg80211_escan_timeout_worker); Si desconectamos el USB mediante hotplug, llamará a brcmf_usb_disconnect para realizar la limpieza. La cadena de invocación es: brcmf_usb_disconnect ->brcmf_usb_disconnect_cb ->brcmf_detach ->brcmf_cfg80211_detach ->kfree(cfg); Mientras que el activador de tiempo de espera aún puede estar ejecutándose. Esto provocará un error de use after free en cfg en brcmf_cfg80211_escan_timeout_worker. Soluciónelo eliminando el temporizador y cancelando el trabajador en brcmf_cfg80211_detach. [arend.vanspriel@broadcom.com: mantenga la eliminación del temporizador tal como está y cancele el trabajo justo antes de 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}


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