Resource exhaustion in Linux kernel - CVE-2026-93823
Published: September 25, 2026
Vulnerability identifier: #VU152076
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-93823
CWE-ID: CWE-400
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to uncontrolled resource allocation in the AMDKFD_IOC_GET_DMABUF_INFO ioctl when processing user-supplied metadata buffer sizes. A local user can provide a hostile oversized metadata buffer size to cause a denial of service.
Exploitation requires membership in the render group.
Affected software
Linux kernel
How to mitigate CVE-2026-93823
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3