CVE-2026-74443
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: bound DMA command body size against suffix pointer vmw_cmd_dma() locates the DM…
Impact
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: bound DMA command body size against suffix pointer vmw_cmd_dma() locates the DMA suffix at (unsigned long) &cmd->body + header->size - sizeof(*suffix) without checking that header->size is large enough to contain both cmd->body and the suffix. An undersized header makes the suffix pointer underflow back into the previous command in the bounce buffer. The verifier later writes suffix->maximumOffset, clobbering verified fields of an already-relocated earlier command -- a TOCTOU on the device-visible command stream that lets one command rewrite another's GMR id, surface id, or other authenticated fields. Reject the command if the body is too small for the suffix to fit.
Affected packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/036e16ada95389bdc30f41068af04c1d0872fad0
- https://git.kernel.org/stable/c/7e40e6120fb232a10b543ffd994e5c6d8f3a2cc6
- https://git.kernel.org/stable/c/9759da60e38d7b9db44dc92713e4e0391883d221
- https://git.kernel.org/stable/c/a4a37080a5ac777b59306cfcdf854cc05d7604d4
- https://git.kernel.org/stable/c/d5d7ada4e1296b00d89fe82b2ca850cc7809d6f7
- https://git.kernel.org/stable/c/eb20f418933bea53375843b27b4022c1810be63b
- https://git.kernel.org/stable/c/f4f1db96bfd68b81053693ba53405b6f510ac16c
- https://git.kernel.org/stable/c/fcd1e56e7816b31a1050ccc67df722b20f6bb15d