ALT-PU-2026-3760-1

Package update qemu in branch sisyphus

Version10.1.4-alt1

Published2026-02-28

Max severityHIGH

Severity:

Closed issues (4)

HIGH7.5

Уязвимость эмулятора аппаратного обеспечения QEMU, связанная с использованием памяти после её освобождения, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2025-12-18Modified: 2026-03-02

CVSS 3.xHIGH 7.5

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0HIGH 7.8

CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:C

References

CVE-2025-11234

HIGH7.5

A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.

Published: 2025-10-03Modified: 2026-04-15

CVSS 3.xHIGH 7.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

MEDIUM5.5

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.

Published: 2026-02-18Modified: 2026-04-15

CVSS 3.xMEDIUM 5.5

CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

MEDIUM6.5

An off-by-one error was found in QEMU's KVM Xen guest support. A malicious guest could use this flaw to trigger out-of-bounds heap accesses in the QEMU process via the emulated Xen physdev hypercall interface, leading to a denial of service or potential memory corruption.

Published: 2026-02-18Modified: 2026-04-15

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

References