NULL pointer dereference in Linux kernel - CVE-2026-31549
Published: April 25, 2026
Vulnerability identifier: #VU127841
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-31549
CWE-ID: CWE-476
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 an attacker with physical access to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in the cp2615 driver probe routine when probing a malicious USB device that lacks a serial string. An attacker with physical access can connect a specially crafted device to trigger a NULL pointer dereference and cause a denial of service.
How to mitigate CVE-2026-31549
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/13ccf9b106bba121728f1625c4375a1bd8f5c5a3
- https://git.kernel.org/stable/c/4a22af879172336370ae3e81e7f65fb2f69472ee
- https://git.kernel.org/stable/c/69aece634a7eebafd9a596e5494d52facf6f26ec
- https://git.kernel.org/stable/c/a9778298f47036866ea15eeb17242e8a4612580f
- https://git.kernel.org/stable/c/aa79f996eb41e95aed85a1bd7f56bcd6a3842008
- https://git.kernel.org/stable/c/e68c267787778bcdf3d91b06f794faaba7f0d1d1
- https://git.kernel.org/stable/c/efe996bcfe50c2dcc6cf65c574285713b722ced7