Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2025-11234: 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.
Fixed packages 28
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | ivshmem-tools | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-audio-alsa | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-audio-oss | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-audio-pa | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-audio-sdl | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-block-curl | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-block-dmg | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-block-iscsi | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-block-nfs | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-block-rbd | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-block-ssh | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-common | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-debuginfo | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-guest-agent | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-img | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-kvm | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-kvm-core | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-system-aarch64 | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-system-aarch64-core | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-system-x86 | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-system-x86-core | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-ui-curses | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-ui-gtk | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-ui-sdl | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-user | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-user-binfmt | 10:3.1.0-8.amzn2.0.21 |
| Amazon Linux · 2 | qemu-user-static | 10:3.1.0-8.amzn2.0.21 |
Vulnerabilities 1
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High 7.5
Qemu-kvm: vnc websocket handshake use-after-free
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…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2025-11234.html