PT-2023-4446 · Linux+9 · Linux Kernel+9
Published
2023-07-29
·
Updated
2024-06-15
·
CVE-2023-4128
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/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
The issue is related to a use-after-free flaw in the Linux kernel's net/sched component, specifically in the classifiers cls fw, cls u32, and cls route. This flaw can be exploited by a local attacker to perform a local privilege escalation due to incorrect handling of the existing filter, leading to a kernel information leak issue. The vulnerability is associated with the repeated use of previously released memory in functions such as fw change() in net/sched/cls fw.c, u32 init knode() in net/sched/cls u32, and route4 change() in net/sched/cls route.c.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use After Free
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Linux Kernel
Red Hat
Red Os
Suse
Ubuntu