CVE-2023-4147
Kernel: netfilter: nf_tables_newrule when adding a rule with nfta_rule_chain_id leads to use-after-free
- State
- Published
- Severity
- 7.8 High
- Published
- Aug 7, 2023
- Updated
- Feb 25, 2026
- Reserved
- Aug 3, 2023
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.8 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | redhat |
Weaknesses
- CWE-416 Use After Free
Affected Products
| Product | Versions |
|---|---|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 9Red Hat |
|
Red Hat Enterprise Linux 9Red Hat | |
Red Hat Enterprise Linux 9.0 Extended Update SupportRed Hat |
|
Red Hat Enterprise Linux 9.0 Extended Update SupportRed Hat |
|
Red Hat Enterprise Linux 9.0 Extended Update SupportRed Hat | |
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 8Red Hat |
References
- RHSA-2023:5069vendor-advisory
- RHSA-2023:5091vendor-advisory
- RHSA-2023:5093vendor-advisory
- RHSA-2023:7382vendor-advisory
- RHSA-2023:7389vendor-advisory
- RHSA-2023:7411vendor-advisory
- https://access.redhat.com/security/cve/CVE-2023-4147vdb-entry
- RHBZ#2225239issue-tracking
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e4874d5987722a2ddbc18f94aa53b211
- https://www.spinics.net/lists/stable/msg671573.html
- 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
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