NULL pointer dereference in Linux kernel - CVE-2026-74445
Published: August 16, 2026
Vulnerability identifier: #VU143328
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-2026-74445
CWE-ID: CWE-476
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 a NULL pointer dereference in vmw_cmd_dx_bind_query() when processing an execbuf command stream containing a SVGA_3D_CMD_DX_BIND_QUERY opcode with dx_context_handle set to SVGA3D_INVALID_ID. A local user can submit a specially crafted execbuf to cause a denial of service.
The issue can be triggered from a render-node file descriptor.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-74445
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.105-1
linux (Debian package) - update to 6.12.105-1
External References
- https://git.kernel.org/stable/c/0634d50e8b398c25bd07c96b048e484d22688c26
- https://git.kernel.org/stable/c/55ec09c9ce10b1272802c7ab6c1be2ea0dbc68db
- https://git.kernel.org/stable/c/6b1eb0b63cc153e1c0cb5ab8350950119be11947
- https://git.kernel.org/stable/c/7eae011829f94a76470ec76f016805f508437755
- https://git.kernel.org/stable/c/e479240a1e076ba1104236331abd62400bf1d495