PT-2023-1165 · Linux+8 · Linux Kernel+8
Kyle Zeng
·
Published
2023-01-01
·
Updated
2025-03-20
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CVE-2023-23454
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 through 6.1.4
Description
The issue is related to the
cbq classify 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, leading to a slab-out-of-bounds read. The problem is associated with incorrect type determination in the packet prioritization subsystem.Recommendations
For Linux kernel versions through 6.1.4, update to a version that contains a fix for this issue to prevent exploitation.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
DoS
Type Confusion
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Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Suse
Ubuntu