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 Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux_2023 | — | Upgrade python3-perf6.12Upgrade kernel6.12-modules-extra-commonUpgrade kernel6.12-modules-extraUpgrade kernel6.12-tools-debuginfoUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel6.12-toolsUpgrade perf6.12-debuginfoUpgrade python3-perf6.12-debuginfoUpgrade kernel6.12-debuginfoUpgrade kernel6.12-develUpgrade kernel6.12-tools-develUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade perf6.12Upgrade kernel6.12-headersUpgrade kernel6.12Upgrade kernel-livepatch-6.12.103-127.188Upgrade bpftool6.12 | Sep 1, 2026 | Aug 15, 2026 |
| Debian | — | Upgrade linux | Aug 26, 2026 | Aug 26, 2026 |
| Redhat_linux | — | No solution exists | Aug 24, 2026 | Aug 15, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 21, 2026 | Aug 15, 2026 |
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