CVE-2022-27666
HIGHCVSS 7.8/10EPSS 5.52%
Last modified
CVE-2022-27666 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat.. EPSS estimates a 5.52% chance of exploitation in the next 30 days.
Description
A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 4.11, < 4.14.274 | — |
| Linux | Linux Kernel | >= 4.15, < 4.19.237 | — |
| Linux | Linux Kernel | >= 4.20, < 5.4.188 | — |
| Linux | Linux Kernel | >= 5.5, < 5.10.108 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.29 | — |
| Linux | Linux Kernel | >= 5.16, < 5.16.15 | — |
| Linux | Linux Kernel | 5.17 | Rc1 |
| Fedoraproject | Fedora | 34 | — |
| Fedoraproject | Fedora | 35 | — |
| Redhat | Virtualization | 4.0 | — |
| Redhat | Enterprise Linux | 8.0 | — |
| Netapp | H300s Firmware | All versions | — |
| Netapp | H500s Firmware | All versions | — |
| Netapp | H700s Firmware | All versions | — |
| Netapp | H300e Firmware | All versions | — |
| Netapp | H500e Firmware | All versions | — |
| Netapp | H700e Firmware | All versions | — |
| Netapp | H410s Firmware | All versions | — |
| Netapp | H410c Firmware | All versions | — |
| Debian | Debian Linux | 9.0 | — |
| Debian | Debian Linux | 10.0 | — |
| Debian | Debian Linux | 11.0 | — |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2061633Issue Tracking, Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/ebe48d368e97d007bfeb76fcb065d6cfc4c96645Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220429-0001/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5127Third Party Advisory
- https://www.debian.org/security/2022/dsa-5173Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2061633Issue Tracking, Patch, Third Party Advisory
- https://github.com/torvalds/linux/commit/ebe48d368e97d007bfeb76fcb065d6cfc4c96645Patch, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220429-0001/Third Party Advisory
- https://www.debian.org/security/2022/dsa-5127Third Party Advisory
- https://www.debian.org/security/2022/dsa-5173Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2022-27666?
A heap buffer overflow flaw was found in IPsec ESP transformation code in net/ipv4/esp4.c and net/ipv6/esp6.c. This flaw allows a local attacker with a normal user privilege to overwrite kernel heap objects and may cause a local privilege escalation threat.
How severe is CVE-2022-27666?
CVE-2022-27666 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 5.52% probability of exploitation in the next 30 days.
How do I fix CVE-2022-27666?
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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