CVE-2025-14876: Qemu-kvm: unbounded allocation in virtio-crypto

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-18 · updated 2026-06-17
Weakness: CWE-770

Description

A flaw was found in the virtio-crypto device of QEMU. A malicious guest operating system can exploit a missing length limit in the AKCIPHER path, leading to uncontrolled memory allocation. This can result in a denial of service (DoS) on the host system by causing the QEMU process to terminate unexpectedly.

References

https://access.redhat.com/security/cve/CVE-2025-14876
https://bugzilla.redhat.com/show_bug.cgi?id=2423549

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