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CVE-2023-47233

MEDIUMCVSS 4.3/10EPSS 0.32%

Last modified

CVE-2023-47233 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
4.3/10

CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
0.32%

23.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel<= 6.5.10

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2023-47233?
CVE-2023-47233 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.
How do I fix CVE-2023-47233?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST