CVE-2026-48914

Published: Jun 12, 2026Modified: Jun 12, 2026

6.7

Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H

Exploitability: 1.5 / Impact: 4.7

Source: secalert@redhat.com (Secondary)

Description

A flaw was found in QEMU's virtio-blk device. The issue arises because the device does not properly validate the size of input descriptors before writing data. A malicious guest with high privileges could exploit this vulnerability by submitting a malformed virtio-blk SCSI request, leading to an out-of-bounds write in the host heap memory and a potential denial of service (DoS) for the QEMU process.

Related CWEs

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().

References (3)

https://access.redhat.com/security/cve/CVE-2026-48914

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2488283

Source: secalert@redhat.com

https://lore.kernel.org/qemu-devel/20260526154957.1741622-1-stefanha@redhat.com/

Source: secalert@redhat.com

Timeline

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