CVE-2023-52649

HIGH7.8

drm/vkms: Avoid reading beyond LUT array

Published May 1, 2024

Modified 8 months ago

Details

In the Linux kernel, the following vulnerability has been resolved:

drm/vkms: Avoid reading beyond LUT array

When the floor LUT index (drm_fixp2int(lut_index) is the last index of the array the ceil LUT index will point to an entry beyond the array. Make sure we guard against it and use the value of the floor LUT index.

v3:

Drop bits from commit description that didn't contribute anything of value

References

WEBhttps://git.kernel.org/stable/c/046c1184ce60b0a37d48134f17ddbc1f32ce02bd WEBhttps://git.kernel.org/stable/c/2fee84030d12d9fddfa874e4562d71761a129277 WEBhttps://git.kernel.org/stable/c/92800aaeff51b8358d1e0a7eb74daf8aa2d7ce9d WEBhttps://git.kernel.org/stable/c/9556c167673057d48ce4a0da675026fe046654c1 ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2023-52649

CVSS Analysis

CVSS v3.1

7.8

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

LowAC:L

Privileges Required

LowPR:L

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

7.8/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Ecosystems

Timeline

PublishedMay 1, 2024

ModifiedMay 4, 2025