{"id":"CVE-2026-74444","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-74444","generatedAt":"2026-10-28T07:24:57.999Z","title":"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…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: validate DRAW_PRIMITIVES header size before division\n\nvmw_cmd_draw() computes\n\n\tmaxnum = (header->size - sizeof(cmd->body)) / sizeof(*decl);\n\nwhere header->size is u32 and is taken straight from the user-supplied\ncommand stream.  When header->size is less than sizeof(cmd->body) the\nunsigned subtraction wraps to nearly 4 GiB, producing a huge maxnum.\nAny user-controlled cmd->body.numVertexDecls then passes the bound and\nthe loop dereferences decl[i] far past the end of the kernel command\nbounce buffer, producing an out-of-bounds read of kernel memory.\n\nReject undersized headers up front.","published":"2026-08-15T13:17:49.000Z","lastModified":"2026-10-16T20:17:28.000Z","status":"Received","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":[],"epss":{"score":0.00129,"percentile":0.02548,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/112c6ff29a56f3a22db4d5af869697aa07035ad6","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2666cddf0dd218aa9bd1f99db688d1b532eac21a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/85891d174707d8bddcec7a888fb4e1d17def34f3","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b89ca4bba820f79dde52af15ee139fe6e8bbc314","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/bef30317fcb4c838a37bceb2fc76256eb6b975c1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c77cf8edae2bd3a1599115301cc7c98d0c78e731","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/dc0be7662b7b0ce28cb5eea864737793ed7b9e70","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fc0c02f510e41650df3479f96e257acf87d8a20a","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-74444","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}