CVE-2026-48914CWE-122

CVE-2026-48914

Medium · published June 12, 2026

CVSS v3.1
6.7
EPSS
0%
Percentile
4.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.7 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00158 · 4.6th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-06-12T14:16Z
References (5)
https://access.redhat.com/errata/RHSA-2026:39311 · [email protected]https://access.redhat.com/errata/RHSA-2026:58571 · [email protected]https://access.redhat.com/security/cve/CVE-2026-48914 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2488283 · [email protected]https://lore.kernel.org/qemu-devel/[email protected]/ · [email protected]
EPSS history
Timeline
  • 12 JUN 09:42Z
    Qemu-kvm: heap buffer overflow in virtio-blk scsi request handling
    cvelistv5