CVE-2023-3390 — A use-after-free vulnerability was found in the Linux kernel's netfilter subsyst
A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c.
Published
2023-06-28T20:02:07.389Z
Last modified
2025-02-13T16:55:10.098Z
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
01What is this vulnerability?
A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c.
02Affected products
| Vendor | Product | Versions |
|---|
| Linux | Linux Kernel | 3.16 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
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07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-06-28T20:02:07.389Z
- Last modified: 2025-02-13T16:55:10.098Z
09References
- git.kernel.org — https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1240…
- kernel.dance — https://kernel.dance/1240eb93f0616b21c675416516ff3d74798fdc97
- www.debian.org — https://www.debian.org/security/2023/dsa-5448
- www.debian.org — https://www.debian.org/security/2023/dsa-5461
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html
- security.netapp.com — https://security.netapp.com/advisory/ntap-20230818-0004/
- packetstormsecurity.com — http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LS…
- lists.debian.org — https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
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