Input validation error in Linux kernel - CVE-2025-21838
Published: March 10, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU105473
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-21838
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the usb_del_gadget() function in drivers/usb/gadget/udc/core.c. A local user can perform a denial of service (DoS) attack.
How to mitigate CVE-2025-21838
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/399a45e5237ca14037120b1b895bd38a3b4492ea
- https://git.kernel.org/stable/c/859cb45aefa6de823b2fa7f229fe6d9562c9f3b7
- https://git.kernel.org/stable/c/97695b5a1b5467a4f91194db12160f56da445dfe
- https://git.kernel.org/stable/c/e3bc1a9a67ce33a2e761e6e7b7c2afc6cb9b7266
- https://git.kernel.org/stable/c/f894448f3904d7ad66fecef8f01fe0172629e091
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.16