SB20240531280 - Out-of-bounds read in Linux kernel typec ucsi driver
Published: May 31, 2024 Updated: May 14, 2025
Security Bulletin ID
SB20240531280
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2021-46980)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the ucsi_unregister_altmodes(), ucsi_get_pdos() and ucsi_pwr_opmode_change() functions in drivers/usb/typec/ucsi/ucsi.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/e5366bea0277425e1868ba20eeb27c879d5a6e2d
- https://git.kernel.org/stable/c/a453bfd7ef15fd9d524004d3ca7b05353a302911
- https://git.kernel.org/stable/c/5e9c6f58b01e6fdfbc740390c01f542a35c97e57
- https://git.kernel.org/stable/c/1f4642b72be79757f050924a9b9673b6a02034bc
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.38
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.22
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13