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Advisory severityMedium6.7Red Hat Linux

Medium [CVE-2026-48914] heap buffer overflow in virtio-blk scsi request handling

This medium-severity Red Hat Linux advisory covers CVE-2026-48914 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 6.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-48914 Source published Source updated

VulniPulse record published

CVE-2026-48914
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

Summary

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.

Red Hat severity: Moderate — CVSS 6.7 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H). Weakness: CWE-122.

Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux for NVIDIA 26; Red Hat OpenShift Container Platform 4. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7.

Red Hat fixing advisory: RHSA-2026:58571, RHSA-2026:39311.

Affected products named by the advisory: Red Hat package: qemu-kvm-ma.

Is CVE-2026-48914 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2026-48914 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2026-48914?

Upgrade to a fixed release named by Red Hat:

  • qemu-kvm-18:10.1.0-16.el10_2.5
  • qemu-kvm-17:10.1.0-17.el9_8.4
  • RHSA-2026:58571
  • RHSA-2026:39311

Confirm against the vendor advisory before you patch.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.

Official advisory · high-confidence parse· fetched 16 days ago·verify at source

Fixed versions
  • qemu-kvm-18:10.1.0-16.el10_2.5
  • qemu-kvm-17:10.1.0-17.el9_8.4
  • RHSA-2026:58571
  • RHSA-2026:39311

Official advisory · high-confidence parse· fetched 16 days ago·verify at source

Mitigation

Upgrade to a fixed release: qemu-kvm-18:10.1.0-16.el10_2.5, qemu-kvm-17:10.1.0-17.el9_8.4, RHSA-2026:58571, RHSA-2026:39311. That is the remediation for this advisory.

The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.

Official advisory · high-confidence parse· fetched 16 days ago·verify at source

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