CVE-2023-32233
HIGHCVSS 7.8/10EPSS 12.97%
Last modified
CVE-2023-32233 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. EPSS estimates a 12.97% chance of exploitation in the next 30 days.
Description
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.13, < 4.14.315 |
| Linux | Linux Kernel | >= 4.15, < 4.19.283 |
| Linux | Linux Kernel | >= 4.20, < 5.4.243 |
| Linux | Linux Kernel | >= 5.5, < 5.10.180 |
| Linux | Linux Kernel | >= 5.11, < 5.15.111 |
| Linux | Linux Kernel | >= 5.16, < 6.1.28 |
| Linux | Linux Kernel | >= 6.2, < 6.2.15 |
| Linux | Linux Kernel | >= 6.3, < 6.3.2 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
| Netapp | Hci Baseboard Management Controller | h300s |
| Netapp | Hci Baseboard Management Controller | h410c |
| Netapp | Hci Baseboard Management Controller | h410s |
| Netapp | Hci Baseboard Management Controller | h500s |
| Netapp | Hci Baseboard Management Controller | h700s |
References
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.htmlPatch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2023/05/15/5Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2196105Issue Tracking, Mitigation, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/07/msg00030.htmlMailing List, Third Party Advisory
- https://news.ycombinator.com/item?id=35879660Issue Tracking
- https://security.netapp.com/advisory/ntap-20230616-0002/Mailing List, Third Party Advisory
- https://www.debian.org/security/2023/dsa-5402Mailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2023/05/08/4Mailing List, Patch, Third Party Advisory
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.htmlPatch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2023/05/15/5Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2196105Issue Tracking, Mitigation, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00008.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/07/msg00030.htmlMailing List, Third Party Advisory
- https://news.ycombinator.com/item?id=35879660Issue Tracking
- https://security.netapp.com/advisory/ntap-20230616-0002/Mailing List, Third Party Advisory
- https://www.debian.org/security/2023/dsa-5402Mailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2023/05/08/4Mailing List, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-32233?
In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.
How severe is CVE-2023-32233?
CVE-2023-32233 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 12.97% probability of exploitation in the next 30 days.
How do I fix CVE-2023-32233?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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