CVE-2023-52649

drm/vkms: Avoid reading beyond LUT array

HIGH
7.8
CVSS Score
Published: May 1, 2024 at 12:53 PM UTC
Updated: June 17, 2026 at 06:43 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.6 ≤ v < 6.6.236.6 ≤ v < 6.7.116.6 ≤ v < 6.8.26.6 ≤ v < 6.96.7 ≤ v < 6.7.116.8 ≤ v < 6.8.26.6db1f254f2cfaf0510ae34fa2311a8d749e95179a
Vendor states this is fixed in 046c1184ce60b0a37d48134f17ddbc1f32ce02bd (fixed)
Vendor states this is fixed in 2fee84030d12d9fddfa874e4562d71761a129277 (fixed)
Vendor states this is fixed in 92800aaeff51b8358d1e0a7eb74daf8aa2d7ce9d (fixed)
Vendor states this is fixed in 9556c167673057d48ce4a0da675026fe046654c1 (fixed)
Vendor states this is fixed in 6.6 (unaffected)
Vendor states this is fixed in 6.6.23 (unaffected)
Vendor states this is fixed in 6.7.11 (unaffected)
Vendor states this is fixed in 6.8.2 (unaffected)
Vendor states this is fixed in 6.9 (unaffected)

References (4)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/046c1184ce60b0a37d48134f17ddbc1f32ce02bd
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/2fee84030d12d9fddfa874e4562d71761a129277
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/92800aaeff51b8358d1e0a7eb74daf8aa2d7ce9d
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/9556c167673057d48ce4a0da675026fe046654c1

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-129

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