CVE-2023-53077
HIGH severity · CVSS 7.8 · Out-of-bounds write
7.8CVSS HIGH
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix shift-out-of-bounds in CalculateVMAndRowBytes [WHY] When PTEBufferSizeInRequests is zero, UBSAN reports the following warning because dml_log2 returns an unexpected negative value: shift exponent 4294966273 is too large for 32-bit type 'int' [HOW] In the case PTEBufferSizeInRequests is zero, skip the dml_log2() and assign the result directly.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://git.kernel.org/stable/c/031f196d1b1b6d5dfcb0533b431e3ab1750e6189 ↗
Additional information
- NVD record
- https://git.kernel.org/stable/c/031f196d1b1b6d5dfcb0533b431e3ab1750e6189Patch
- https://git.kernel.org/stable/c/7257070be70e19a9138f39009c1a26c83a8a7cfaPatch
- https://git.kernel.org/stable/c/a16394b5d661afec9a264fecac3abd87aea439eaPatch
- https://git.kernel.org/stable/c/bec1bea2fa974e63f6059c33edde669c7894d0bcPatch
- https://git.kernel.org/stable/c/e12b95680821b9880cd9992c0f3555389363604fPatch