CVE-2023-4147
Kernel: netfilter: nf_tables_newrule when adding a rule with nfta_rule_chain_id leads to use-after-free
- 7.8HighCVSS base score
- 0.55%Exploitation in 30 daysEPSS · top 53% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- YesPublic exploitsa reference or SSVC says so
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: a proof of concept is public.
Timeline
ID reserved
By redhat
- 4 days later
· 4 days later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.55% · top 53% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-284.30.1.el9_2 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-284.30.1.rt14.315.el9_2 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-284.30.1.el9_2 – < *
Red Hat · Red Hat Enterprise Linux 9
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support
- unaffected 0:5.14.0-70.80.1.el9_0 – < *
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support
- unaffected 0:5.14.0-70.80.1.rt21.151.el9_0 – < *
Red Hat · Red Hat Enterprise Linux 9.0 Extended Update Support
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 6
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 8
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 8
All versions: unaffected
References
References14
- RHSA-2023:5069 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2023:5091 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2023:5093 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2023:7382 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2023:7389 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2023:7411 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://access.redhat.com/security/cve/CVE-2023-4147 (opens in a new tab)vdb-entryx_refsource_REDHATx_transferred
- RHBZ#2225239 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e4874d5987722a2ddbc18f94aa53b211 (opens in a new tab)x_transferred
- https://www.spinics.net/lists/stable/msg671573.html (opens in a new tab)x_transferred
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20231020-0006/ (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5480 (opens in a new tab)x_transferred
- https://www.debian.org/security/2023/dsa-5492 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2023-54027 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2023-4147)Record last updated .