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VulnerabilityPublished Updated

CVE-2026-5761: [virtio-blk · zone report buffer out-of-memory]

Affects qemuSource GCVE Database

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Not known to be exploited.

Data as of 26 Oct 2026, 16:15 UTC

Severity
Medium

Rated by Threat Radar · No CVSS score from NVD or the CNA

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10qemupkg:deb/ubuntu/qemu?arch=source&distro=stonkingOther threatsAffected
  • 1:10.2.1+ds-1ubuntu3 – 1:11.0.3+ds-2ubuntu2
4 affected builds
Fixed in–
Ubuntu 26.10qemu-hwepkg:deb/ubuntu/qemu-hwe?arch=source&distro=stonkingOther threatsAffected
  • 1:10.2.1+ds-1ubuntu4 – 1:11.0.3+ds-2ubuntu4
5 affected builds
Fixed in–
Ubuntu 26.04 LTSqemupkg:deb/ubuntu/qemu?arch=source&distro=resoluteOther threatsAffected
  • 1:10.1.0+ds-5ubuntu2 – 1:10.2.1+ds-1ubuntu3.3
10 affected builds
Fixed in–
Ubuntu 26.04 LTSqemu-hwepkg:deb/ubuntu/qemu-hwe?arch=source&distro=resoluteOther threatsAffected
  • 1:10.2.1+ds-1ubuntu2 – 1:10.2.1+ds-1ubuntu4.4
5 affected builds
Fixed in–
Ubuntu 25.10qemupkg:deb/ubuntu/qemu?arch=source&distro=questingOther threatsAffected
  • 1:9.2.1+ds-1ubuntu5 – 1:10.1.0+ds-5ubuntu2.7
12 affected builds
Fixed in–
Ubuntu 24.04 LTSqemupkg:deb/ubuntu/qemu?arch=source&distro=nobleOther threatsAffected
  • 1:8.0.4+dfsg-1ubuntu3 – 1:8.2.2+ds-0ubuntu1.18
24 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

No specific mitigation steps are described in the available data.

Description

CVE-2026-5761 is a medium severity vulnerability in QEMU related to the virtio-blk device, specifically a zone report buffer out-of-memory condition. It affects multiple Ubuntu package versions of QEMU. No CVSS score or detailed technical exploitation information is provided. There are no known exploits in the wild and no patch information is currently available.

References

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