What’s Vulnerable › Vulnerabilities

CVE-2022-1852

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-06-30 · updated 2026-10-14
• Weakness: CWE-476

Description

A NULL pointer dereference flaw was found in the Linux kernel’s KVM module, which can lead to a denial of service in the x86_emulate_insn in arch/x86/kvm/emulate.c. This flaw occurs while executing an illegal instruction in guest in the Intel CPU.

Affected products

• Linux kernel: before 5.19 — fixed in 5.19
• Red Hat Enterprise Linux: 8.0, 9.0

How to fix

Upgrade to a fixed version: Linux kernel 5.19. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2089815
• https://github.com/torvalds/linux/commit/fee060cd52d69c114b62d1a2948ea9648b5131f9
• https://bugzilla.redhat.com/show_bug.cgi?id=2089815
• https://github.com/torvalds/linux/commit/fee060cd52d69c114b62d1a2948ea9648b5131f9
• https://cert-portal.siemens.com/productcert/html/ssa-794697.html

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