PT-2023-1164 · Linux+8 · Linux Kernel+8
Kyle Zeng
·
Published
2023-01-01
·
Updated
2025-03-20
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CVE-2023-23455
CVSS v3.1
5.5
Medium
| Vector | AV: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 versions prior to 6.1.5
Description
The issue is related to the atm tc enqueue function in the Linux kernel, which can cause a denial of service due to type confusion. This confusion occurs because non-negative numbers can sometimes indicate a TC ACT SHOT condition rather than valid classification results.
Recommendations
For Linux kernel versions prior to 6.1.5, update to version 6.1.5 or later to resolve the issue.
As a temporary workaround, consider restricting access to the atm tc enqueue function in net/sched/sch atm.c to minimize the risk of exploitation.
Fix
DoS
Type Confusion
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Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Suse
Ubuntu