PT-2023-2761 · Linux+10 · Linux Kernel+10
Patryk Sondej
+1
·
Published
2023-05-02
·
Updated
2026-03-10
·
CVE-2023-32233
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 versions through 6.3.1
Description
A use-after-free vulnerability in the Linux kernel's Netfilter nf tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges due to the mishandling of anonymous sets. This vulnerability may allow an attacker to impact the confidentiality, integrity, and availability of data or elevate their privileges in the system and execute arbitrary code.
Recommendations
Linux kernel versions through 6.3.1: As a temporary workaround, consider disabling the
nf tables commit() function until a patch is available. Restrict access to the Netfilter nf tables module to minimize the risk of exploitation. Avoid using the nf tables API until the issue is resolved.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.Exploit
DoS
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