CVE-2023-47233

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-11-03 · updated 2026-10-15
Weakness: CWE-416

Description

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.

Affected products

Linux kernel: through 6.5.10

References

https://bugzilla.suse.com/show_bug.cgi?id=1216702
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/msg00020.html
https://lore.kernel.org/all/20231104054709.716585-1-zyytlz.wz%40163.com/
https://marc.info/?l=linux-kernel&m=169907678011243&w=2
https://bugzilla.suse.com/show_bug.cgi?id=1216702
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/msg00020.html
https://lore.kernel.org/all/20231104054709.716585-1-zyytlz.wz%40163.com/
https://marc.info/?l=linux-kernel&m=169907678011243&w=2

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