SB2024111275 - Red Hat Enterprise Linux 9 update for qemu-kvm

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Main Vulnerability Database SB2024111275

SB2024111275 - Red Hat Enterprise Linux 9 update for qemu-kvm

Published: November 12, 2024

Security Bulletin ID SB2024111275
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2024-26327)

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to a boundary error within the register_vfs() function in hw/pci/pcie_sriov.c in VF implementations. A malicious guest can trigger memory corruption and execute arbitrary code on the system.


2) Double free (CVE-ID: CVE-2024-3446)

The vulnerability allows a malicious guest to escalate privileges on the system.

The vulnerability exists due to a boundary error in QEMU virtio devices (virtio-gpu, virtio-serial-bus, virtio-crypto), where the mem_reentrancy_guard flag insufficiently protects against DMA reentrancy issues. A malicious guest can trigger a double free error and execute arbitrary code within the context of the QEMU process on the host.


3) Improper synchronization (CVE-ID: CVE-2024-7409)

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to improper synchronization during socket closure in the QEMU NBD Server. A malicious guest can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References