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Vulnerability record · CVE-2023-4147 · published 7 August 2023

CVE-2023-4147: Linux kernel use after free vulnerability

Linux · Linux Kernel

A use-after-free flaw was found in the Linux kernel’s Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system.

7.8 CVSS 3.1 High EPSS 0.56% · top 54.8% CWE-416 · Use after free
7.8CVSS 3.1 base score
0.56%EPSS exploitation probability, 30 days
NoNot in CISA KEV
8Affected product versions listed by NVD
24References
17 Jun 2026Last modified by NVD

Description

A use-after-free flaw was found in the Linux kernel’s Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system.

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

Affected products

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

References

LinkTags
https://access.redhat.com/errata/RHSA-2023:5069 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5091 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5093 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7382 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7389 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7411 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-4147 PatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2225239 Issue TrackingPatchThird Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e4874d5987722a2ddbc18f94aa53b211 Mailing ListPatch
https://www.spinics.net/lists/stable/msg671573.html Mailing ListPatch
https://access.redhat.com/errata/RHSA-2023:5069 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5091 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:5093 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7382 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7389 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7411 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-4147 PatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2225239 Issue TrackingPatchThird Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e4874d5987722a2ddbc18f94aa53b211 Mailing ListPatch
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
https://security.netapp.com/advisory/ntap-20231020-0006/
https://www.debian.org/security/2023/dsa-5480
https://www.debian.org/security/2023/dsa-5492
https://www.spinics.net/lists/stable/msg671573.html Mailing ListPatch

Track CVE-2023-4147 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2023-4147), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.