SB20251008100 - Improper locking in Linux kernel net usb driver
Published: October 8, 2025 Updated: October 26, 2025
Security Bulletin ID
SB20251008100
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) Improper locking (CVE-ID: CVE-2023-53667)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the cdc_ncm_check_tx_max() and cdc_ncm_fill_tx_frame() functions in drivers/net/usb/cdc_ncm.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/2334ff0b343ba6ba7a6c0586fcc83992bbbc1776
- https://git.kernel.org/stable/c/42b78c8cc774b47023d6d16d96d54cc7015e4a07
- https://git.kernel.org/stable/c/6147745d43ff4e0d2c542e5b93e398ef0ee4db00
- https://git.kernel.org/stable/c/72d0240b0ee4794efc683975c213e4b384fea733
- https://git.kernel.org/stable/c/7e01c7f7046efc2c7c192c3619db43292b98e997
- https://git.kernel.org/stable/c/9be921854e983a81a0aeeae5febcd87093086e46
- https://git.kernel.org/stable/c/bf415bfe7573596ac213b4fd1da9e62cfc9a9413
- https://git.kernel.org/stable/c/ff484163dfb61b58f23e4dbd007de1094427669c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.245