SB2025121084 - Out-of-bounds read in Linux kernel usb early driver
Published: December 10, 2025 Updated: December 12, 2025
Security Bulletin ID
SB2025121084
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-2023-53840)
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 xdbc_bulk_write() function in drivers/usb/early/xhci-dbc.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/351c8d8650d1ccc006255fa01f98b6c6496a02e5
- https://git.kernel.org/stable/c/a4a97ab3db5c081eb6e7dba91306adefb461e0bd
- https://git.kernel.org/stable/c/df7c8aba7309f4dc55df94e06b67f576c0f52406
- https://git.kernel.org/stable/c/e8fb0f13e45cf361fd06593d3cb2d89915cd3bd0
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.99