CVE-2023-4147
Kernel: netfilter: nf_tables_newrule when adding a rule with nfta_rule_chain_id leads to use-after-free
HIGH 7.8EPSS 0.6%
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.
- Affected
- Red Hat · Red Hat Enterprise Linux 9 · Red Hat Enterprise Linux 9.0 Extended Update Support · Red Hat Enterprise Linux 6 · Red Hat Enterprise Linux 7 · Red Hat Enterprise Linux 8
- CVSS v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.56% chance of exploitation in the next 30 days, 45th percentile
- Published
- 2023-08-07
- Updated
- 2026-02-25
Proof-of-concept exploits (1)
- murdok1982/Exploit-en-Python-para-CVE-2023-41470★ · 2026-06-10
Exploit collections (2)
- linux/kernelctf/CVE-2023-4147_lts_cosgoogle/security-research
- linux/kernelctf/CVE-2023-4147_mitigationgoogle/security-research
Security advisories
- 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-2023:7382
- https://access.redhat.com/errata/RHSA-2023:7389
- https://access.redhat.com/errata/RHSA-2023:7411
- https://access.redhat.com/security/cve/CVE-2023-4147
- https://bugzilla.redhat.com/show_bug.cgi?id=2225239
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e48…
- https://www.spinics.net/lists/stable/msg671573.html