Vulnerability CVE-2023-32233
Published: 2023-05-08

Description:
In the Linux kernel through 6.3.1, a use-after-free in 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. This occurs because anonymous sets are mishandled.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Linux Kernel proc_readdir_de() 6.18-rc5 Local Privilege Escalation
Aviral Srivastav...
04.05.2026
Med.
Linux nf_tables 6.19.3 Local Privilege Escalation
Aviral Srivastav...
23.05.2026

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

 References:
https://github.com/torvalds/linux/commit/c1592a89942e9678f7d9c8030efa777c0d57edab
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1592a89942e9678f7d9c8030efa777c0d57edab
https://www.openwall.com/lists/oss-security/2023/05/08/4
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