drm/vmwgfx: Fix a null-ptr access in the cursor snooper
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.
CVE 정보
EPSS
EPSS는 취약점이 악용될 가능성을 예측하는 점수 모델입니다.
EPSS 점수
EPSS 모델은 0과 1(0~100%) 사이의 확률 점수를 생성합니다. 점수가 높을수록 취약점이 악용될 가능성이 높습니다.
날짜
EPSS V0
EPSS V1
EPSS V2 (> 2022-02-04)
EPSS V3 (> 2025-03-07)
EPSS V4 (> 2025-03-17)
2025-11-12
–
–
–
–
0.02%
2025-11-21
–
–
–
–
0.02%
2025-12-13
–
–
–
–
0.02%
2025-12-14
–
–
–
–
0.03%
2026-01-16
–
–
–
–
0.03%
2026-01-20
–
–
–
–
0.04%
2026-02-22
–
–
–
–
0.05%
2026-03-01
–
–
–
–
0.05%
2026-03-15
–
–
–
–
0.07%
2026-04-12
–
–
–
–
0.04%
2026-04-26
–
–
–
–
0.06%
2026-06-14
–
–
–
–
0.07%
EPSS 백분위수
백분위수는 EPSS 점수에 따라 CVE의 순위를 매기는 데 사용됩니다. 예를 들어 EPSS 점수 기준 95번째 백분위수의 CVE는 다른 CVE의 95%보다 악용될 가능성이 높습니다.