PT-2026-6166 · Linux+2 · Linux Kernel+2

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CVE-2026-23096

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Published

2026-01-01

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Updated

2026-08-21

CVSS v3.1

9.8

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Linux Kernel (affected versions not specified)
Description A flaw exists in the Linux kernel related to the handling of character devices within the uacce module. Specifically, a use-after-free condition can occur during the cleanup process when cdev device add fails. If cdev device add fails, the associated memory is released, and subsequent execution of cdev device del leads to a hang error. The issue arises from failing to check the return value of cdev device add() and subsequently attempting to call cdev device del in the uacce remove function.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Handling of Exceptional Conditions

Unchecked Return Value

Improper Resource Release

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Weakness Enumeration

Related Identifiers

BDU:2026-11073
CVE-2026-23096
ECHO-CA1C-AB12-2AB3
OESA-2026-1863
OESA-2026-2176
OPENSUSE-SU-2026:20416-1
SUSE-SU-2026:0962-1
SUSE-SU-2026:1081-1
SUSE-SU-2026:20667-1
SUSE-SU-2026:20720-1
SUSE-SU-2026:20838-1
SUSE-SU-2026:20845-1
SUSE-SU-2026:20873-1
SUSE-SU-2026:20876-1
SUSE-SU-2026:20931-1
SUSE-SU-2026:21284-1
USN-8162-1
USN-8180-1
USN-8180-2
USN-8180-3
USN-8180-4
USN-8180-5
USN-8180-6
USN-8186-1
USN-8187-1
USN-8188-1
USN-8243-1
USN-8275-1
USN-8278-1
USN-8278-2
USN-8289-1
USN-8289-2
USN-8296-1
USN-8296-2
USN-8297-1
USN-8393-1
USN-8440-1
USN-8499-1
USN-8570-1
USN-8570-2
USN-8594-1
USN-8604-1
USN-8605-1
USN-8669-1

Affected Products

Linux Kernel
Linuxmint
Ubuntu