8.2

CVE-2023-2008: linux kernel Improper Validation of Array Index

CVSS: 8.2v3.1HighModified
AliasesUBUNTU-CVE-2023-2008DEBIAN-CVE-2023-2008
Published 14-04-2023Last modified 10-08-2026
Open JSON

Vulnerability summary

CVE-2023-2008 is a high (CVSS 8.2) Improper Validation of Array Index vulnerability in linux kernel. EPSS estimates a 1.01% chance of exploitation in the next 30 days, higher than 62.5% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v3.1 (CVE.org)
EPSS score
1.01%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 11 · Related 6
RHSA-2022:7933RHSA-2022:8267RHSA-2023:3465RHSA-2023:3470RHSA-2023:3490SUSE-SU-2023:2140-1

Timeline

  1. 14-04-2023
    PublishedVulnerability first disclosed.
  2. 10-08-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in the Linux kernel's udmabuf device driver, within a fault handler. This issue occurs due to the lack of proper validation of user-supplied data, which can result in memory access past the end of an array. This may allow an attacker to escalate privileges and execute arbitrary code in the context of the kernel.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

1.01%

Chance of exploitation in the next 30 days

Percentile

63%

Versus all other CVEs

30-day change

0.00 pp

From 1.01% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.01%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu77 products
  • linux< 5.4.0-126.142 | < 5.15.0-48.54
  • linux-aws< 5.4.0-1085.92 | < 5.15.0-1020.24
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
Linux2 products
  • kernel≥ 4.20, < 5.4.202 | ≥ 5.5, < 5.10.127 | ≥ 5.11, < 5.15.51 | ≥ 5.16, < 5.18.8
  • linux_kernelEOL< 5.19 | ≥ 4.20, < 5.4.202 | ≥ 5.5, < 5.10.127 | ≥ 5.11, < 5.15.51 | ≥ 5.16, < 5.18.8 | 5.19 | 5.19:rc1 | 5.19:rc2 | 5.19:rc3
Debian1 product
  • linux< 5.18.14-1

3 vendors · 80 products

References

16 links
Show all 16 references