CVE-2023-52649: drm/vkms: Avoid reading beyond LUT array
Vulnerability summary
CVE-2023-52649 is a high (CVSS 7.8) Improper Validation of Array Index vulnerability in linux. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 20.2% of scored vulnerabilities.
Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 8 · Related 7Timeline
- 01-05-2024PublishedVulnerability first disclosed.
- 11-05-2026Last modifiedVulnerability information updated.
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
CVSS metrics
3 scores · 3 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
20%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.28% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu72 products
- linux< 6.8.0-35.35
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws< 6.8.0-1009.9
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
Linux2 products
- linux≥ db1f254f2cfaf0510ae34fa2311a8d749e95179a, < 9556c167673057d48ce4a0da675026fe046654c1 | ≥ db1f254f2cfaf0510ae34fa2311a8d749e95179a, < 046c1184ce60b0a37d48134f17ddbc1f32ce02bd | ≥ db1f254f2cfaf0510ae34fa2311a8d749e95179a, < 92800aaeff51b8358d1e0a7eb74daf8aa2d7ce9d | ≥ db1f254f2cfaf0510ae34fa2311a8d749e95179a, < 2fee84030d12d9fddfa874e4562d71761a129277 | 6.6
- linux_kernel≥ 6.6, < 6.6.23 | ≥ 6.7, < 6.7.11 | ≥ 6.8, < 6.8.2
Debian1 product
- linux< 6.7.12-1
3 vendors · 75 products
