PT-2026-8114 · Linux+2 · Linux Kernel+2

Published

2026-01-01

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Updated

2026-05-22

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CVE-2026-23121

CVSS v3.1

5.5

Medium

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description The Linux kernel contains a data race condition around dev->work within the mISDN module. Specifically, dev->work can be read locklessly in the mISDN read() and mISDN poll() functions. The issue involves a write to memory location 0xffff88812d848280 by task 10864 and a subsequent read from the same location by task 10857, leading to a potential data race. The vulnerability was addressed by adding READ ONCE() and WRITE ONCE() annotations.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Related Identifiers

CVE-2026-23121
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-2026:20876-1
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-8289-1
USN-8296-1
USN-8297-1

Affected Products

Linuxmint
Linux Kernel
Ubuntu