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CVE-2022-48764

5.3 · MEDIUM
Published Jun 20, 2024 linux CWE-401 EPSS 0.18% (7th pctl)

Overview

CVE-2022-48764 is a medium-severity vulnerability affecting linux linux_kernel. It was published on June 20, 2024 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical Description

In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: Free kvm_cpuid_entry2 array on post-KVM_RUN KVM_SET_CPUID{,2}

Free the "struct kvm_cpuid_entry2" array on successful post-KVM_RUN

KVM_SET_CPUID{,2} to fix a memory leak, the callers of kvm_set_cpuid()

free the array only on failure.

BUG: memory leak

unreferenced object 0xffff88810963a800 (size 2048):

comm "syz-executor025", pid 3610, jiffies 4294944928 (age 8.080s)

hex dump (first 32 bytes):

00 00 00 00 00 00 00 00 00 00 00 00 0d 00 00 00 ................

47 65 6e 75 6e 74 65 6c 69 6e 65 49 00 00 00 00 GenuntelineI....

backtrace:

[<ffffffff814948ee>] kmalloc_node include/linux/slab.h:604 [inline]

[<ffffffff814948ee>] kvmalloc_node+0x3e/0x100 mm/util.c:580

[<ffffffff814950f2>] kvmalloc include/linux/slab.h:732 [inline]

[<ffffffff814950f2>] vmemdup_user+0x22/0x100 mm/util.c:199

[<ffffffff8109f5ff>] kvm_vcpu_ioctl_set_cpuid2+0x8f/0xf0 arch/x86/kvm/cpuid.c:423

[<ffffff

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 5.16.3, < 5.16.5 Affected

Frequently Asked Questions

What is CVE-2022-48764?

CVE-2022-48764 is a medium-severity vulnerability affecting linux linux_kernel. It was published on June 20, 2024 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2022-48764?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-48764?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-48764?

CyberStrike's AI-powered security agents can automatically detect CVE-2022-48764 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.