CVE-2022-36946
HIGHCVSS 7.5/10EPSS 5.56%
Last modified
CVE-2022-36946 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte nfta_payload attribute, an skb_pull can encounter a negative skb->len.. EPSS estimates a 5.56% chance of exploitation in the next 30 days.
Description
nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte nfta_payload attribute, an skb_pull can encounter a negative skb->len.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 2.6.14, < 4.9.326 |
| Linux | Linux Kernel | >= 4.10, < 4.14.291 |
| Linux | Linux Kernel | >= 4.15, < 4.19.255 |
| Linux | Linux Kernel | >= 4.20, < 5.4.209 |
| Linux | Linux Kernel | >= 5.5, < 5.10.135 |
| Linux | Linux Kernel | >= 5.11, < 5.15.59 |
| Linux | Linux Kernel | >= 5.16, < 5.18.16 |
| Debian | Debian Linux | 10.0 |
| Debian | Debian Linux | 11.0 |
| Netapp | Active Iq Unified Manager | All versions |
| Netapp | Solidfire \& Hci Management Node | All versions |
| Netapp | Solidfire \& Hci Storage Node | All versions |
| Netapp | Solidfire Enterprise Sds | All versions |
| Netapp | Hci Compute Node | All versions |
References
- https://lists.debian.org/debian-lts-announce/2022/09/msg00011.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing List, Third Party Advisory
- https://marc.info/?l=netfilter-devel&m=165883202007292&w=2Mailing List, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220901-0007/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5207Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/09/msg00011.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/10/msg00000.htmlMailing List, Third Party Advisory
- https://marc.info/?l=netfilter-devel&m=165883202007292&w=2Mailing List, Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220901-0007/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5207Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-36946?
nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte nfta_payload attribute, an skb_pull can encounter a negative skb->len.
How severe is CVE-2022-36946?
CVE-2022-36946 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 5.56% probability of exploitation in the next 30 days.
How do I fix CVE-2022-36946?
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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Are you affected by CVE-2022-36946?
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Scan your code nowSource: NVD / NIST