🛡️ OESA-2026-2861 — qemu

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

qemu security update

QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed.

Security Fix(es):

A vulnerability, which was classified as critical, has been found in QEMU (Virtualization Software) (version unknown).Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.Impacted is confidentiality, integrity, and availability.Upgrading eliminates this vulnerability.(CVE-2026-3886)

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.(CVE-2026-48914)

Affected software

OESA-2026-2861 is recorded against 1 package.

  • qemu (fixed in 8.2.0-80.oe2403sp3)

Timeline and source

Published on 6 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.openeuler.org (Advisory)
nvd.nist.gov (Advisory)
nvd.nist.gov (Advisory)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-07-06
Updated 2026-08-12
Modified 2026-07-06
Fix URL N/A

Affected Packages

Software From version Fixed in
qemu — 8.2.0-80.oe2403sp3

Similar Threats

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