CVE - CVE-2024-35811

CVE-ID
CVE-2024-35811	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0a7591e14a8da794d0b93b5d1c6254ccb23adacb URL:https://git.kernel.org/stable/c/0a7591e14a8da794d0b93b5d1c6254ccb23adacb MISC:https://git.kernel.org/stable/c/0b812f706fd7090be74812101114a0e165b36744 URL:https://git.kernel.org/stable/c/0b812f706fd7090be74812101114a0e165b36744 MISC:https://git.kernel.org/stable/c/0f7352557a35ab7888bc7831411ec8a3cbe20d78 URL:https://git.kernel.org/stable/c/0f7352557a35ab7888bc7831411ec8a3cbe20d78 MISC:https://git.kernel.org/stable/c/190794848e2b9d15de92d502b6ac652806904f5a URL:https://git.kernel.org/stable/c/190794848e2b9d15de92d502b6ac652806904f5a MISC:https://git.kernel.org/stable/c/202c503935042272e2f9e1bb549d5f69a8681169 URL:https://git.kernel.org/stable/c/202c503935042272e2f9e1bb549d5f69a8681169 MISC:https://git.kernel.org/stable/c/6678a1e7d896c00030b31491690e8ddc9a90767a URL:https://git.kernel.org/stable/c/6678a1e7d896c00030b31491690e8ddc9a90767a MISC:https://git.kernel.org/stable/c/8c36205123dc57349b59b4f1a2301eb278cbc731 URL:https://git.kernel.org/stable/c/8c36205123dc57349b59b4f1a2301eb278cbc731 MISC:https://git.kernel.org/stable/c/8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1 URL:https://git.kernel.org/stable/c/8e3f03f4ef7c36091f46e7349096efb5a2cdb3a1 MISC:https://git.kernel.org/stable/c/bacb8c3ab86dcd760c15903fcee58169bc3026aa URL:https://git.kernel.org/stable/c/bacb8c3ab86dcd760c15903fcee58169bc3026aa
Assigning CNA
kernel.org
Date Record Created
20240517	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240517)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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