CVE-2026-53329

drm/amd/display: Use krealloc_array() in dal_vector_reserve()

HIGH
7
CVSS Score
Published: July 1, 2026 at 01:32 PM UTC
Updated: October 19, 2026 at 08:19 PM UTC
1 product affected across 1 vendorLinux Kernel

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Use krealloc_array() in dal_vector_reserve() [Why & How] dal_vector_reserve() computes the allocation size as "capacity * vector->struct_size" using uint32_t arithmetic, which can silently wrap to a small value on overflow. This would cause krealloc to return a smaller buffer than expected, leading to heap overflows on subsequent vector appends. Replace krealloc() with krealloc_array() which performs an internal overflow check and returns NULL on wrap, preventing the issue. (cherry picked from commit 37668568641ccc4cc1dbca4923d0a16609dd5707)

Affected

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

4.15 ≤ v < 5.10.2605.11 ≤ v < 5.15.2105.16 ≤ v < 6.1.1766.13 ≤ v < 6.18.366.19 ≤ v < 7.0.136.2 ≤ v < 6.6.1436.7 ≤ v < 6.12.942004f45ef83f07f43f5da6ede780b08068c7583d7.17.1 rc17.1 rc27.1 rc37.1 rc47.1 rc57.1 rc6
Vendor states this is fixed in 201151e120f0062bcda21cad5d007b82725ad23b (fixed)
Vendor states this is fixed in 31180638a33acad12c863132704a76536fb66211 (fixed)
Vendor states this is fixed in 9540b0a4d13e4ede64ae1197d66a176d2149daa9 (fixed)
Vendor states this is fixed in a914aa802669e073f014dae2e5708633b5cecd34 (fixed)
Vendor states this is fixed in b15825deac1acff72638bbc8f05b89ceef8dfb13 (fixed)
Vendor states this is fixed in da48bc4461b8a5ebfb9264c9b191a701d8e99009 (fixed)
Vendor states this is fixed in de988c7a31f0774f07894cfe4802996f318e2870 (fixed)
Vendor states this is fixed in e09689286385a66311ac6922af95339d7a3cef8d (fixed)
Vendor states this is fixed in 4.15 (unaffected)
Vendor states this is fixed in 5.10.260 (unaffected)
Vendor states this is fixed in 5.15.210 (unaffected)
Vendor states this is fixed in 6.1.176 (unaffected)
Vendor states this is fixed in 6.12.94 (unaffected)
Vendor states this is fixed in 6.18.36 (unaffected)
Vendor states this is fixed in 6.6.143 (unaffected)
Vendor states this is fixed in 7.0.13 (unaffected)
Vendor states this is fixed in 7.1 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

7HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-674CWE-190

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card