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Untriaged
Permalink CVE-2025-11234
7.5 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
created 3 months, 3 weeks ago Activity log
  • Created suggestion 3 months, 3 weeks ago
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 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.

References

Affected products

qemu
  • <10.1.2
rhcos
  • *
qemu-kvm
  • *
qemu-kvm-ma
virt:av/qemu-kvm
virt:8.2/qemu-kvm
virt:rhel/qemu-kvm

Matching in nixpkgs

pkgs.qemu

Generic and open source machine emulator and virtualizer

pkgs.qemu_kvm

Generic and open source machine emulator and virtualizer

pkgs.qemu_xen

Generic and open source machine emulator and virtualizer

pkgs.qemu-user

QEMU User space emulator - launch executables compiled for one CPU on another CPU

pkgs.qemu_full

Generic and open source machine emulator and virtualizer

pkgs.qemu_test

Generic and open source machine emulator and virtualizer

pkgs.qemu-utils

Generic and open source machine emulator and virtualizer

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