CVE-2026-63964
kernel: usb: typec: ucsi: ccg: reject firmware images without a ':' record header
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · July 19, 2026
Updated · October 31, 2026
Description
A flaw was found in the Linux kernel's USB Type-C (UCSI) CCG driver. A local attacker with root privileges can provide a specially crafted firmware image without a required record header. This malformed image can cause a null pointer dereference within the do_flash() function, leading to a kernel crash and a Denial of Service (DoS) on the system.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference