SB2023110640 - Use-after-free in Linux kernel brcm
Published: November 6, 2023
Security Bulletin ID
SB2023110640
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-47233)
The vulnerability allows an attacker to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the brcm80211 in a brcmf_cfg80211_detach in the device unplugging (disconnect the USB by hotplug) code. An attacker with physical access to device can trigger a use-after-free error and escalate privileges on the system.
Remediation
Install update from vendor's website.