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Vulnerability record · CVE-2023-32233 · published 8 May 2023

CVE-2023-32233: Linux kernel use after free vulnerability

Linux · Linux Kernel

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.

7.8 CVSS 3.1 High EPSS 13% · top 3.8% CWE-416 · Use after free
7.8CVSS 3.1 base score
13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
22References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html PatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/05/15/5 Mailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2196105 Issue TrackingMitigationThird Party Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1592a89942e9678f7d9c8030efa777c0d57edab Mailing ListPatch
https://github.com/torvalds/linux/commit/c1592a89942e9678f7d9c8030efa777c0d57edab Patch
https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html Mailing ListThird Party Advisory
https://news.ycombinator.com/item?id=35879660 Issue Tracking
https://security.netapp.com/advisory/ntap-20230616-0002/ Mailing ListThird Party Advisory
https://www.debian.org/security/2023/dsa-5402 Mailing ListThird Party Advisory
https://www.openwall.com/lists/oss-security/2023/05/08/4 Mailing ListPatchThird Party Advisory
http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html PatchThird Party Advisory
http://www.openwall.com/lists/oss-security/2023/05/15/5 Mailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2196105 Issue TrackingMitigationThird Party Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1592a89942e9678f7d9c8030efa777c0d57edab Mailing ListPatch
https://github.com/torvalds/linux/commit/c1592a89942e9678f7d9c8030efa777c0d57edab Patch
https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html Mailing ListThird Party Advisory
https://news.ycombinator.com/item?id=35879660 Issue Tracking
https://security.netapp.com/advisory/ntap-20230616-0002/ Mailing ListThird Party Advisory
https://www.debian.org/security/2023/dsa-5402 Mailing ListThird Party Advisory
https://www.openwall.com/lists/oss-security/2023/05/08/4 Mailing ListPatchThird Party Advisory

Track CVE-2023-32233 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Source: NIST National Vulnerability Database (record CVE-2023-32233), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.