---
cve: "CVE-2026-53190"
severity: "LOW"
cvss: 3.1
epss: "12%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-06-25 09:16:36"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T06:06:59+02:00"
---

# CVE-2026-53190

> 3.1 LOW

## Beschreibung

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

drm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait()

dma_fence_unwrap_for_each() internally calls dma_fence_unwrap_first()
which does cursor->chain = dma_fence_get(head), taking an extra
reference. On normal loop completion, dma_fence_unwrap_next()
releases this via dma_fence_chain_walk() -> dma_fence_put().

When virtio_gpu_do_fence_wait() fails and the function returns early
from inside the loop, the cursor->chain reference is never released.
This is the only caller in the entire kernel that does an early return
inside dma_fence_unwrap_for_each.

Add dma_fence_put(itr.chain) before the early return.

## Patch verfügbar (OSV)

- Kernel ≥ 6.6.143
- Kernel ≥ 6.12.94
- Kernel ≥ 6.18.36
- Kernel ≥ 7.0.13

## Referenzen

- <https://git.kernel.org/stable/c/898bd0ccfed71651b881660c5d20ad73b5203174>
- <https://git.kernel.org/stable/c/73524e9f96a278b521f257a78a845c49eb522bc1>
- <https://git.kernel.org/stable/c/8348567a6afb24e2c9cafe8a321162d0eebe1411>
- <https://git.kernel.org/stable/c/c0fffc874c264292e769f26194a2a5e66ce31810>
- <https://git.kernel.org/stable/c/3f26bb732cc136ab20176697c92f32c9c84cb125>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53190) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_