CVE-2024-26327

Description

An issue was discovered in QEMU 7.1.0 through 8.2.1. register_vfs in hw/pci/pcie_sriov.c mishandles the situation where a guest writes NumVFs greater than TotalVFs, leading to a buffer overflow in VF implementations.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.16%• Percentile: 37%

Techniques & Countermeasures

• CWE-787•Out-of-bounds Write

  The product writes data past the end, or before the beginning, of the intended buffer.

• CWE-122•Heap-based Buffer Overflow

  A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Affected Systems

• qemu•qemu

  ≥ 7.1.0, ≤ 8.2.1

References (2)

• https://lore.kernel.org/all/20240214-reuse-v4-5-89ad093a07f4%40daynix.com/
• https://security.netapp.com/advisory/ntap-20240419-0010/