CVE-2026-99150
kernel: kernel: Denial of Service via double reference count drop in amdgpu debugfs
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 28, 2026
Updated · October 30, 2026
Description
A flaw was found in the Linux kernel's AMD GPU driver. When an error occurs while copying register data to user space during a debugfs read operation, the driver improperly releases a runtime Power Management (PM) reference twice. A local user could exploit this flaw by providing an invalid memory buffer, triggering a reference count underflow that may cause system instability or a Denial of Service (DoS).
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 · 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-911 · Improper Update of Reference Count