CVE-2024-26914

drm/amd/display: fix incorrect mpc_combine array size

HIGH
7.8
CVSS Score
Published: April 17, 2024 at 03:59 PM UTC
Updated: August 5, 2026 at 12:04 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix incorrect mpc_combine array size [why] MAX_SURFACES is per stream, while MAX_PLANES is per asic. The mpc_combine is an array that records all the planes per asic. Therefore MAX_PLANES should be used as the array size. Using MAX_SURFACES causes array overflow when there are more than 3 planes. [how] Use the MAX_PLANES for the mpc_combine array size.

Affected

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

4.15 ≤ v < 6.7.64.15 ≤ v < 6.86.7 ≤ v < 6.7.64562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c6.8 rc16.8 rc2
Vendor states this is fixed in 0bd8ef618a42d7e6ea3f701065264e15678025e3 (fixed)
Vendor states this is fixed in 39079fe8e660851abbafa90cd55cbf029210661f (fixed)
Vendor states this is fixed in 4.15 (unaffected)
Vendor states this is fixed in 6.7.6 (unaffected)
Vendor states this is fixed in 6.8 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/0bd8ef618a42d7e6ea3f701065264e15678025e3
Patch
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/39079fe8e660851abbafa90cd55cbf029210661f

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

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

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-129

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