CVE-2026-48914

Impact

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.

Affected packages

This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.

Weakness classification

References

• NVD record
• CVE.org record
• https://access.redhat.com/errata/RHSA-2026:39311
• https://access.redhat.com/errata/RHSA-2026:58571
• https://access.redhat.com/security/cve/CVE-2026-48914
• https://bugzilla.redhat.com/show_bug.cgi?id=2488283
• https://lore.kernel.org/qemu-devel/20260526154957.1741622-1-stefanha@redhat.com/