---
cve: "CVE-2026-53261"
severity: "LOW"
cvss: 3.1
epss: "11%"
vendor: "Linux"
kev: false
exploited: false
published: "2026-06-25 09:16:44"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T04:50:08+02:00"
---

# CVE-2026-53261

> 3.1 LOW

## Beschreibung

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

devlink: Release nested relation on devlink free

devlink relation state is normally released from devl_unregister(), which
calls devlink_rel_put(). This misses devlink instances that get a nested
relation before registration and then fail probe before devl_register() is
reached.

That flow can happen for SFs. The child devlink gets linked to its
parent before registration, then a later probe error calls devlink_free()
directly. Since the instance was never registered, devl_unregister() is not
called and devlink->rel is leaked.

Release any pending relation from devlink_free() as well. The registered
path is unchanged because devl_unregister() already clears devlink->rel
before devlink_free() runs.

## Patch verfügbar (OSV)

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

## Referenzen

- <https://git.kernel.org/stable/c/a9137286884703113b1c9e6403bd6d7d97b14754>
- <https://git.kernel.org/stable/c/927f96861f939c0b517d13ed27bf4fabbfc1cfb3>
- <https://git.kernel.org/stable/c/11324d52b0c63f4f202b35793c6507a575e9a689>
- <https://git.kernel.org/stable/c/3522b21fd7e1863d0734537737bd59f1b90d0190>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53261) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_