---
cve: "CVE-2026-89820"
severity: "LOW"
cvss: 3.1
epss: "0.2%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-09-16 11:16:47"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T20:03:59+02:00"
---

# CVE-2026-89820

> 3.1 LOW

## Beschreibung

In the Linux kernel, the following vulnerability has been resolved:

drm/amd/display: fix dc_lock leak on GPU reset error paths

On GPU reset, dm_suspend() takes dc_lock and leaves it for dm_resume()
to drop. If amdgpu_dm_commit_zero_streams() or dm_dmub_hw_init() fails,
the function returns with the lock still held. The matching resume path
is then skipped, so every later dc_lock take hangs.

Release the cached DC state and unlock before returning the error.

## Patch verfügbar (OSV)

- Kernel ≥ 6.18.51
- Kernel ≥ 7.2.5

## Referenzen

- <https://git.kernel.org/stable/c/295d2bf42061db490254e748f9344545bb7faf19>
- <https://git.kernel.org/stable/c/dac29cbb405b912742f4f7eda833cec8e7a53780>
- <https://git.kernel.org/stable/c/92a9eebd2a1f892fe482154d83f9f1626bc73d3b>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-89820) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_