7.8
/ 10
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
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().
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().
Basic Information
ID
CVE-2026-43056
Source
Linux
Published
May 1, 2026 at 14:15
Modified
May 3, 2026 at 05:46
Affected Product
Vendor
Linux
Product
Linux
Version
a69839d4327d053b18d8e1b0e7ddeee78db78f4f
Affected Versions
Linux Linux a69839d4327d053b18d8e1b0e7ddeee78db78f4f
Linux Linux a69839d4327d053b18d8e1b0e7ddeee78db78f4f
Linux Linux a69839d4327d053b18d8e1b0e7ddeee78db78f4f
Linux Linux a69839d4327d053b18d8e1b0e7ddeee78db78f4f
Linux Linux a69839d4327d053b18d8e1b0e7ddeee78db78f4f
Linux Linux 6.2
Linux Linux a69839d4327d053b18d8e1b0e7ddeee78db78f4f
Linux Linux a69839d4327d053b18d8e1b0e7ddeee78db78f4f
Linux Linux a69839d4327d053b18d8e1b0e7ddeee78db78f4f
Linux Linux a69839d4327d053b18d8e1b0e7ddeee78db78f4f
Linux Linux 6.2
References
- git.kernel.org /stable/c/d88541ffd56d62a61e77209080001eddd4d69815
- git.kernel.org /stable/c/43f5b19fd190fea20d052bc84741b28031d5baa9
- git.kernel.org /stable/c/5f4061f8225d18695e5afe9bbf1cb7bd673d7872
- git.kernel.org /stable/c/e5a75bf026c686b91a7dc6f9c5caf5016745d1fe
- git.kernel.org /stable/c/c4ea7d8907cf72b259bf70bd8c2e791e1c4ff70f