Use After Free Affecting kernel-devel-matched package, versions <0:5.14.0-687.15.1.el9_8


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.12% (2nd percentile)

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  • Snyk IDSNYK-ALMALINUX9-KERNELDEVELMATCHED-17317241
  • published12 Jun 2026
  • disclosed11 Jun 2026

Introduced: 11 Jun 2026

NewCVE-2026-43056  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 kernel-devel-matched to version 0:5.14.0-687.15.1.el9_8 or higher.
This issue was patched in ALSA-2026:25217.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-devel-matched package and not the kernel-devel-matched package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

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

net: mana: fix use-after-free in add_adev() error path

If auxiliary_device_add() fails, add_adev() jumps to add_fail and calls auxiliary_device_uninit(adev).

The auxiliary device has its release callback set to adev_release(), which frees the containing struct mana_adev. Since adev is embedded in struct mana_adev, the subsequent fall-through to init_fail and access to adev->id may result in a use-after-free.

Fix this by saving the allocated auxiliary device id in a local variable before calling auxiliary_device_add(), and use that saved id in the cleanup path after auxiliary_device_uninit().

CVSS Base Scores

version 3.1