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NVD / CVE Program· CNA Linux

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

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.26% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 59d99deb330af206a4541db0c4da8f73880fba03, 9933eca6ada0cd612e19522e7a319bcef464c0eb, a31ea49dc8064a557565725cf045944307476a6e.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Linux Linux 59d99deb330af206a4541db0c4da8f73880fba03, 9933eca6ada0cd612e19522e7a319bcef464c0eb, a31ea49dc8064a557565725cf045944307476a6e or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Jul 30, 2024
Updated
Jun 17, 2026
EPSS
0.2% · 17th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-42121

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.15 and later · before 5.10.222
  • linux linux kernel5.11 and later · before 5.15.163
  • linux linux kernel5.16 and later · before 6.1.98
  • linux linux kernel6.2 and later · before 6.6.39
  • linux linux kernel6.7 and later · before 6.9.9

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.15affected
    • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c and later · before b5b8837d066cc182ff69fb5629ad32ade5484567affected · git
    • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c and later · before fbb0701af9734cff13917a4b98b5ee9da2fde48daffected · git
    • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c and later · before ae91ffbc8b8d942e3e7f188728cad557b7ed5ee4affected · git
    • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c and later · before 9933eca6ada0cd612e19522e7a319bcef464c0ebaffected · git
    • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c and later · before a31ea49dc8064a557565725cf045944307476a6eaffected · git
    • 4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c and later · before 59d99deb330af206a4541db0c4da8f73880fba03affected · git
    • before 4.15not affected · semver
    • 5.10.222 and later · up to and including 5.10.*not affected · semver
    • 5.15.163 and later · up to and including 5.15.*not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.98-16.1.98-1
Debian:13linuxbefore 6.9.9-16.9.9-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
    90Now
  • CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now

Published before and after this one in the same product

  • ← EarlierCVE-2024-42119Jul 30, 2024 · drm/amd/display: Skip finding free audio for unknown engine_id
    31Monitor
  • ← EarlierCVE-2024-42120Jul 30, 2024 · drm/amd/display: Check pipe offset before setting vblank
    31Monitor
  • Later →CVE-2024-42122Jul 30, 2024 · drm/amd/display: Add NULL pointer check for kzalloc
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux59d99deb330af206a4541db0c4da8f73880fba03Vendor (CNA)
Linux Linux9933eca6ada0cd612e19522e7a319bcef464c0ebVendor (CNA)
Linux Linuxa31ea49dc8064a557565725cf045944307476a6eVendor (CNA)
Linux Linuxae91ffbc8b8d942e3e7f188728cad557b7ed5ee4Vendor (CNA)
Linux Linuxb5b8837d066cc182ff69fb5629ad32ade5484567Vendor (CNA)
Linux Linuxfbb0701af9734cff13917a4b98b5ee9da2fde48dVendor (CNA)
debian:linux6.1.98-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2021-4754867 days apartethernet: hisilicon: hns: hns_dsaf_misc: fix a possible array overflow in hns_dsaf_ge_srst_by_port()
    39Monitor
  • CVE-2023-2008473 days apartKernel: udmabuf: improper validation of array index leading to local privilege escalation
    32Monitor
  • CVE-2024-421170 days apartdrm/amd/display: ASSERT when failing to find index by plane/stream id
    31Monitor
  • CVE-2024-421200 days apartdrm/amd/display: Check pipe offset before setting vblank
    31Monitor
  • CVE-2024-421480 days apartbnx2x: Fix multiple UBSAN array-index-out-of-bounds
    31Monitor
  • CVE-2024-420921 days apartgpio: davinci: Validate the obtained number of IRQs
    31Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-129 · Improper Validation of Array Index

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (6 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records