7.8

CVE-2024-42121: drm/amd/display: Check index msg_id before read or write

Modified
AliasesUBUNTU-CVE-2024-42121DEBIAN-CVE-2024-42121
Published 30-07-2024Last modified 11-05-2026

Vulnerability summary

CVE-2024-42121 is a high (CVSS 7.8) Improper Validation of Array Index vulnerability in linux. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 17.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.26%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 28 · Related 24
DLA-4008-1DSA-5747-1MGASA-2024-0277MGASA-2024-0278SUSE-SU-2024:3190-1SUSE-SU-2024:3194-1

Timeline

  1. 30-07-2024
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Check index msg_id before read or write [WHAT] msg_id is used as an array index and it cannot be a negative value, and therefore cannot be equal to MOD_HDCP_MESSAGE_ID_INVALID (-1). [HOW] Check whether msg_id is valid before reading and setting. This fixes 4 OVERRUN issues reported by Coverity.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

18%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.26% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu130 products
  • linuxAll versions (No fix recorded) | < 5.15.0-121.131 | < 6.8.0-48.48
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1069.75 | < 6.8.0-1018.20
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < b5b8837d066cc182ff69fb5629ad32ade5484567 | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < fbb0701af9734cff13917a4b98b5ee9da2fde48d | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < ae91ffbc8b8d942e3e7f188728cad557b7ed5ee4 | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 9933eca6ada0cd612e19522e7a319bcef464c0eb | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < a31ea49dc8064a557565725cf045944307476a6e | ≥ 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c, < 59d99deb330af206a4541db0c4da8f73880fba03 | 4.15
  • linux_kernel≥ 4.15, < 5.10.222 | ≥ 5.11, < 5.15.163 | ≥ 5.16, < 6.1.98 | ≥ 6.2, < 6.6.39 | ≥ 6.7, < 6.9.9
Debian1 product
  • linux< 6.1.98-1 | < 6.9.9-1

3 vendors · 133 products

References

27 links
Show all 27 references