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Vulnerability record · CVE-2023-3390 · published 28 June 2023

CVE-2023-3390: Linux kernel use after free vulnerability

Linux · Linux Kernel

A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue. We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97

7.8 CVSS 3.1 High EPSS 0.91% · top 41.3% CWE-416 · Use after free
7.8CVSS 3.1 base score
0.91%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
16References
22 Jul 2026Last modified by NVD

Description

A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue. We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97

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

Affected products

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

References

LinkTags
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1240eb93f0616b21c675416516ff3d74798fdc97 Mailing ListPatch
https://kernel.dance/1240eb93f0616b21c675416516ff3d74798fdc97 Patch
https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html Third Party AdvisoryVDB Entry
https://lists.debian.org/debian-security-announce/2023/msg00140.html
https://lists.debian.org/debian-security-announce/2023/msg00153.html
https://packetstorm.news/tos/aHR0cHM6Ly9wYWNrZXRzdG9ybS5uZXdzL2ZpbGVzLzE3NDU3Ny9LZXJuZWwtTGl2ZS1QYXRjaC1TZWN1cml0eS1Ob3R
https://security.netapp.com/advisory/ntap-20230818-0004/ Third Party Advisory
http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html Third Party AdvisoryVDB Entry
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1240eb93f0616b21c675416516ff3d74798fdc97 Mailing ListPatch
https://kernel.dance/1240eb93f0616b21c675416516ff3d74798fdc97 Patch
https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html Third Party AdvisoryVDB Entry
https://security.netapp.com/advisory/ntap-20230818-0004/ Third Party Advisory
https://www.debian.org/security/2023/dsa-5448 Third Party Advisory
https://www.debian.org/security/2023/dsa-5461 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2023-3390), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.