CVE-2025-11234
7.5 HIGHA flaw was found in QEMU
Published: 2025-10-03 · Last updated: 2026-06-01
Severity and scoring
- CVSS
- 7.5 HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-416
Description
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2025-11234
- [Other]https://access.redhat.com/errata/RHSA-2025:23228
- [Other]https://access.redhat.com/errata/RHSA-2026:0326
- [Other]https://access.redhat.com/errata/RHSA-2026:0332
- [Other]https://access.redhat.com/errata/RHSA-2026:0702
- [Other]https://access.redhat.com/errata/RHSA-2026:1831
- [Other]https://access.redhat.com/errata/RHSA-2026:18772
- [Other]https://access.redhat.com/errata/RHSA-2026:22147
- [Other]https://access.redhat.com/errata/RHSA-2026:3077
- [Other]https://access.redhat.com/errata/RHSA-2026:3165
- [Other]https://access.redhat.com/errata/RHSA-2026:5578
- [Other]https://access.redhat.com/security/cve/CVE-2025-11234
- [Other]https://bugzilla.redhat.com/show_bug.cgi?id=2401209
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Same CWE
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- CVE-2026-10639 — In Zephyr's native IPv4 stack, icmpv4_handle_echo_request() in subsys/net/ip/icmpv4.c builds an echo-reply packet (reply), hands it to ne... (4.8 MEDIUM)
- CVE-2026-10638 — subsys/net/ip/icmpv6.c reads the network interface from a net_pkt after that packet has been handed to net_try_send_data() (5.9 MEDIUM)
- CVE-2026-10637 — subsys/net/ip/ipv6_mld.c:mld_send() read the packet interface via net_pkt_iface(pkt) after net_send_data(pkt) returned successfully (5.9 MEDIUM)
- CVE-2026-10636 — In Zephyr's IPv4 IGMP implementation, igmp_send() in subsys/net/ip/igmp.c read the network interface back out of the packet via net_pkt_i... (3.7 LOW)