Improper input validation in Linux kernel - CVE-2026-53376
Published: July 21, 2026
Vulnerability identifier: #VU138891
CSH Severity: Low
CVSS v4.0: 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-2026-53376
CWE-ID: CWE-20
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 a local user to cause a denial of service.
The vulnerability exists due to improper input validation in kfd_ioctl_get_process_apertures_new when handling a num_of_nodes value supplied to the ioctl. A local user can supply a crafted num_of_nodes value to cause a denial of service.
How to mitigate CVE-2026-53376
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/44d5a450c04d3d734c13a03561c3131020d66edf
- https://git.kernel.org/stable/c/4a8093c7def141cc6e854fbe3f9693867982418f
- https://git.kernel.org/stable/c/6ba6ec5fcbb0d03ca11ed1cc38d57a7deb6c6b20
- https://git.kernel.org/stable/c/74b73fa56a395d46745e4f245225963e9f8be7f1
- https://git.kernel.org/stable/c/7b80137eb8aa9d1cbfe7ccf3eeb1faa94ae35d7e