Buffer overflow in Red Hat Enterprise Linux 10
CVE-2026-48914
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.002 (6.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 6.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-48914 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- lore.kernel.org/qemu-devel/20260526154957.1741622-1-stefanha@redhat.com/
- access.redhat.com/errata/RHSA-2026:39311 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:58571 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-48914?
- CVE-2026-48914 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Heap-based Buffer Overflow. CVSS score: 6.7/10. Published 2026-06-12.
- How severe is CVE-2026-48914?
- Medium severity. CVSS v3 base score is 6.7 out of 10.