CVE-2025-40110
Description
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix a null-ptr access in the cursor snooper Check that the resource which is converted to a surface exists before trying to use the cursor snooper on it. vmw_cmd_res_check allows explicit invalid (SVGA3D_INVALID_ID) identifiers because some svga commands accept SVGA3D_INVALID_ID to mean "no surface", unfortunately functions that accept the actual surfaces as objects might (and in case of the cursor snooper, do not) be able to handle null objects. Make sure that we validate not only the identifier (via the vmw_cmd_res_check) but also check that the actual resource exists before trying to do something with it. Fixes unchecked null-ptr reference in the snooping code.
How to fix
- Linux Linux3332212e93d0f6e24f8fe79f975e077c4e68ca39, 86aae7053d2da3fdfde7b2e84d86e4af50490505, af9d88cbf0fce52f465978360542ef679713491f, 299cfb5a7deabdf9ecd30071755672af0aced5eb, 13c9e4ed125e19484234c960efe5ac9c55119523, b6fca0a07989f361ceda27cb2d09c555d4d4a964, 5ac2c0279053a2c5265d46903432fb26ae2d0da2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | c0951b797e7d0f2c6b0df2c0e18185c72d0cf1a1 ≤ v < 3332212e93d0f6e24f8fe79f975e077c4e68ca39, c0951b797e7d0f2c6b0df2c0e18185c72d0cf1a1 ≤ v < 86aae7053d2da3fdfde7b2e84d86e4af50490505, c0951b797e7d0f2c6b0df2c0e18185c72d0cf1a1 ≤ v < af9d88cbf0fce52f465978360542ef679713491f, c0951b797e7d0f2c6b0df2c0e18185c72d0cf1a1 ≤ v < 299cfb5a7deabdf9ecd30071755672af0aced5eb, c0951b797e7d0f2c6b0df2c0e18185c72d0cf1a1 ≤ v < 13c9e4ed125e19484234c960efe5ac9c55119523, c0951b797e7d0f2c6b0df2c0e18185c72d0cf1a1 ≤ v < b6fca0a07989f361ceda27cb2d09c555d4d4a964, c0951b797e7d0f2c6b0df2c0e18185c72d0cf1a1 ≤ v < 5ac2c0279053a2c5265d46903432fb26ae2d0da2, 3.8 | 3332212e93d0f6e24f8fe79f975e077c4e68ca39, 86aae7053d2da3fdfde7b2e84d86e4af50490505, af9d88cbf0fce52f465978360542ef679713491f, 299cfb5a7deabdf9ecd30071755672af0aced5eb, 13c9e4ed125e19484234c960efe5ac9c55119523, b6fca0a07989f361ceda27cb2d09c555d4d4a964, 5ac2c0279053a2c5265d46903432fb26ae2d0da2 |
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