What’s Vulnerable › Vulnerabilities

CVE-2025-40277: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-06 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE This data originates from userspace and is used in buffer offset calculations which could potentially overflow causing an out-of-bounds access.

Affected products

• Linux kernel: 4.3 — fixed in 6.18

How to fix

Upgrade to a fixed version: Linux kernel 6.18. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/32b415a9dc2c212e809b7ebc2b14bc3fbda2b9af
• https://git.kernel.org/stable/c/54d458b244893e47bda52ec3943fdfbc8d7d068b
• https://git.kernel.org/stable/c/5aea2cde03d4247cdcf53f9ab7d0747c9dca1cfc
• https://git.kernel.org/stable/c/709e5c088f9c99a5cf2c1d1c6ce58f2cca7ab173
• https://git.kernel.org/stable/c/a3abb54c27b2c393c44362399777ad2f6e1ff17e
• https://git.kernel.org/stable/c/b5df9e06eed3df6a4f5c6f8453013b0cabb927b4
• https://git.kernel.org/stable/c/e58559845021c3bad5e094219378b869157fad53
• https://git.kernel.org/stable/c/f3f3a8eb3f0ba799fae057091d8c67cca12d6fa0

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