CVE-2025-14876: Qemu-kvm: unbounded allocation in virtio-crypto
Vulnerability summary
CVE-2025-14876 is a medium (CVSS 5.5) vulnerability in qemu. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 4.6% of scored vulnerabilities.
Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 7Timeline
- 18-02-2026PublishedVulnerability first disclosed.
- 19-02-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.15%
Chance of exploitation in the next 30 days
Percentile
5%
Versus all other CVEs
30-day change
Increase +0.01 pp
From 0.14% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Suse5 products
- qemu-linux-user&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7< 9.2.4-150700.3.17.1
- qemu&distro=SUSE Linux Enterprise Micro 5.5< 7.1.0-150500.49.39.2
- qemu&distro=SUSE Linux Enterprise Module for Basesystem 15 SP7< 9.2.4-150700.3.17.1
- qemu&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7< 9.2.4-150700.3.17.1
- qemu&distro=SUSE Linux Enterprise Module for Server Applications 15 SP7< 9.2.4-150700.3.17.1 | < 7.1.0-150500.49.39.2
Debian1 product
- qemuAll versions (No fix recorded) | < 1:10.0.8+ds-0+deb13u1 | < 1:10.2.1+ds-1
Opensuse1 product
- qemu&distro=openSUSE Tumbleweed< 10.2.1-1.1
Ubuntu1 product
- qemu< 1:8.2.2+ds-0ubuntu1.13 | < 1:10.1.0+ds-5ubuntu2.4
4 vendors · 8 products