PT-2023-3974 · Linux+10 · Linux Kernel+10
M A Ramdhan
·
Published
2023-07-06
·
Updated
2024-08-22
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CVE-2023-3776
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
A use-after-free vulnerability in the Linux kernel's net/sched: cls fw component can be exploited to achieve local privilege escalation. If
tcf change indev() fails, fw set parms() will immediately return an error after incrementing or decrementing the reference counter in tcf bind filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability.Recommendations
Upgrade past commit 0323bce598eea038714f941ce2b22541c46d488f.
Exploit
Fix
LPE
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
Rocky Linux
Suse
Ubuntu