SB2023070444 - Privilege escalation in Linux kernel usb3
Published: July 4, 2023
Security Bulletin ID
SB2023070444
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Race condition (CVE-ID: CVE-2023-35828)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within the renesas_usb3_remove() function in drivers/usb/gadget/udc/renesas_usb3.c. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://lore.kernel.org/lkml/CAJedcCwkuznS1kSTvJXhzPoavcZDWNhNMshi-Ux0spSVRwU=RA@mail.gmail.com/T/
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2b947f8769be8b8181dc795fd292d3e7120f5204
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
- https://lore.kernel.org/all/20230327121700.52d881e0@canb.auug.org.au/