Cyber Resilience

CVE-2022-27666

High

Published: 23 March 2022

Published
23 March 2022
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0088 75.8th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-27666 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Linux Linux Kernel. Its CVSS base score is 7.8 (High).

Operationally, ranked in the top 24.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-787

Related Threats

Threat-Actor AttributionAI

Ember Bear (G1003)
Russian Military Cyber Actors Target US and Global Critical Infrastructure | CISA

Affected Assets

linux
linux kernel
5.17 · ≤ 5.17
fedoraproject
fedora
34, 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
+3 more product configuration(s) — see NVD for full list

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References