Vulnerabilities > CVE-2023-47233 - Use After Free vulnerability in Linux Kernel
Attack vector
PHYSICAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
The brcm80211 component in the Linux kernel through 6.5.10 has a brcmf_cfg80211_detach use-after-free in the device unplugging (disconnect the USB by hotplug) code. For physically proximate attackers with local access, this "could be exploited in a real world scenario." This is related to brcmf_cfg80211_escan_timeout_worker in drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://bugzilla.suse.com/show_bug.cgi?id=1216702
- https://bugzilla.suse.com/show_bug.cgi?id=1216702
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0f7352557a35ab7888bc7831411ec8a3cbe20d78
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0f7352557a35ab7888bc7831411ec8a3cbe20d78
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://lore.kernel.org/all/20231104054709.716585-1-zyytlz.wz%40163.com/
- https://lore.kernel.org/all/20231104054709.716585-1-zyytlz.wz%40163.com/
- https://marc.info/?l=linux-kernel&m=169907678011243&w=2
- https://marc.info/?l=linux-kernel&m=169907678011243&w=2