CVE-2026-74444drm/vmwgfx: validate DRAW_PRIMITIVES header size before division
Updated under an hour ago ()
Does this affect you?
It affects Linux. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: validate DRAW_PRIMITIVES header size before division vmw_cmd_draw() computes maxnum = (header->size - sizeof(cmd->body)) / sizeof(*decl); where header->size is u32 and is taken straight from the user-supplied command stream. When header->size is less than sizeof(cmd->body) the unsigned subtraction wraps to nearly 4 GiB, producing a huge maxnum. Any user-controlled cmd->body.numVertexDecls then passes the bound and the loop dereferences decl[i] far past the end of the kernel command bounce buffer, producing an out-of-bounds read of kernel memory. Reject undersized headers up front.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 7a73ba7469cbea631050094fd14f73acebb97cf9 before b89ca4bba820f79dde52af15ee139fe6e8bbc314; from 7a73ba7469cbea631050094fd14f73acebb97cf9 before bef30317fcb4c838a37bceb2fc76256eb6b975c1; from 7a73ba7469cbea631050094fd14f73acebb97cf9 before 112c6ff29a56f3a22db4d5af869697aa07035ad6; from 7a73ba7469cbea631050094fd14f73acebb97cf9 before 2666cddf0dd218aa9bd1f99db688d1b532eac21a; from 7a73ba7469cbea631050094fd14f73acebb97cf9 before fc0c02f510e41650df3479f96e257acf87d8a20a; from 7a73ba7469cbea631050094fd14f73acebb97cf9 before dc0be7662b7b0ce28cb5eea864737793ed7b9e70; from 7a73ba7469cbea631050094fd14f73acebb97cf9 before c77cf8edae2bd3a1599115301cc7c98d0c78e731; from 7a73ba7469cbea631050094fd14f73acebb97cf9 before 85891d174707d8bddcec7a888fb4e1d17def34f3 | CNA record |
References
- https://git.kernel.org/stable/c/b89ca4bba820f79dde52af15ee139fe6e8bbc314
- https://git.kernel.org/stable/c/bef30317fcb4c838a37bceb2fc76256eb6b975c1
- https://git.kernel.org/stable/c/112c6ff29a56f3a22db4d5af869697aa07035ad6
- https://git.kernel.org/stable/c/2666cddf0dd218aa9bd1f99db688d1b532eac21a
- https://git.kernel.org/stable/c/fc0c02f510e41650df3479f96e257acf87d8a20a
- https://git.kernel.org/stable/c/dc0be7662b7b0ce28cb5eea864737793ed7b9e70
- https://git.kernel.org/stable/c/c77cf8edae2bd3a1599115301cc7c98d0c78e731
- https://git.kernel.org/stable/c/85891d174707d8bddcec7a888fb4e1d17def34f3
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.