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Status published
High
CVE-2023-4004
Kernel: netfilter: use-after-free due to improper element removal in nft_pipapo_remove()
Vulnerability Description
A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://access.redhat.com/errata/RHSA-2023:4961
- https://access.redhat.com/errata/RHSA-2023:4962
- https://access.redhat.com/errata/RHSA-2023:4967
- https://access.redhat.com/errata/RHSA-2023:5069
- https://access.redhat.com/errata/RHSA-2023:5091
- https://access.redhat.com/errata/RHSA-2023:5093
- https://access.redhat.com/errata/RHSA-2023:5221
- https://access.redhat.com/errata/RHSA-2023:5244
- https://access.redhat.com/errata/RHSA-2023:5255
- https://access.redhat.com/errata/RHSA-2023:5548
- https://access.redhat.com/errata/RHSA-2023:5627
- https://access.redhat.com/errata/RHSA-2023:7382
- https://access.redhat.com/errata/RHSA-2023:7389
- https://access.redhat.com/errata/RHSA-2023:7411
- https://access.redhat.com/errata/RHSA-2023:7417
- https://access.redhat.com/errata/RHSA-2023:7431
- https://access.redhat.com/errata/RHSA-2023:7434
- https://access.redhat.com/security/cve/CVE-2023-4004
- https://bugzilla.redhat.com/show_bug.cgi?id=2225275
- https://patchwork.ozlabs.org/project/netfilter-devel/patch/20230719190824.21196-1-fw@strlen.de/
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Affected Vendor
Red Hat
View all reports →Affected Software
Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Virtualization 4 for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7
Vulnerable Versions:
0:4.18.0-477.27.1.rt7.290.el8_8, 0:4.18.0-477.27.1.el8_8, 0:4.18.0-193.119.1.el8_2, 0:4.18.0-193.119.1.rt13.170.el8_2, 0:4.18.0-305.103.1.el8_4, 0:4.18.0-305.103.1.rt7.178.el8_4, 0:4.18.0-372.75.1.el8_6, 0:5.14.0-284.30.1.el9_2, 0:5.14.0-284.30.1.rt14.315.el9_2, 0:5.14.0-70.80.1.el9_0, 0:5.14.0-70.80.1.rt21.151.el9_0
Timeline
Official Publish:
July 31st, 2023
Last Modified:
November 8th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H