CVE-2025-40277
Published Dec 6, 2025
Modified Apr 15, 2026
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.
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References
Other 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
Frequently Asked Questions
What is CVE-2025-40277? +
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.
How do I check if I'm vulnerable to CVE-2025-40277? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.