Use After Free in Linux Kernel
CVE-2023-47233
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (22.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- bugzilla.suse.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- marc.info/ (Patch, Mailing List)
- lore.kernel.org/all/20231104054709.716585-1-zyytlz.wz@163.com/ (Patch, Mailing List)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/
- lists.debian.org/debian-lts-announce/2024/06/msg00017.html (mailing-list)
- lists.debian.org/debian-lts-announce/2024/06/msg00020.html (mailing-list)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Frequently asked questions
- What is CVE-2023-47233?
- CVE-2023-47233 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 4.3/10. Published 2023-11-03.
- How severe is CVE-2023-47233?
- Medium severity. CVSS v3 base score is 4.3 out of 10.