#VU115645 Input validation error in Linux kernel - CVE-2025-39806
Published: September 16, 2025
Vulnerability identifier: #VU115645
Vulnerability risk: Low
CVSSv4.0: 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-2025-39806
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
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 mt_report_fixup() function in drivers/hid/hid-multitouch.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0379eb8691b9c4477da0277ae0832036ca4410b4
- https://git.kernel.org/stable/c/3055309821dd3da92888f88bad10f0324c3c89fe
- https://git.kernel.org/stable/c/4263e5851779f7d8ebfbc9cc7d2e9b0217adba8d
- https://git.kernel.org/stable/c/7ab7311c43ae19c66c53ccd8c5052a9072a4e338
- https://git.kernel.org/stable/c/c13e95587583d018cfbcc277df7e02d41902ac5a
- https://git.kernel.org/stable/c/d4e6e2680807671e1c73cd6a986b33659ce92f2b