ALAS2023-2026-3442

References: CVE-2026-101291  CVE-2026-111819  CVE-2026-7180 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

A flaw was found in QEMU's websocket I/O channel (QIOChannelWebsock in io/channel-websock.c). The websocket server reads encoded data from a connected client into an input buffer and decodes it into a separate buffer, but the size limit is enforced only on the encoded-input buffer and not on the decoded-input buffer. A client that connects to a QEMU websocket endpoint — such as a VNC server or a character-device socket backend configured with websocket=on — and sends data that is not consumed can cause the decoded-input buffer to grow without bound, exhausting host memory and leading to a denial of service. (CVE-2026-101291)

hw/usb/hcd-xhci: More reentrancy guard fixes for the XHCI code (CVE-2026-111819)

A use-after-free flaw was found in the OHCI USB host controller emulation (hw/usb/hcd-ohci.c) in QEMU. When an isochronous transfer descriptor is directed at a non-isochronous endpoint, ohci_service_iso_td() can free a heap-allocated USBPacket while a pending asynchronous transfer still holds a reference to it; that reference is later dereferenced when the transfer completes. A malicious guest able to program the emulated OHCI controller can use this to crash the QEMU process on the host (denial of service) and potentially execute arbitrary code in the context of the QEMU process. The issue is fixed in QEMU 11.1.3 and 10.0.15. (CVE-2026-7180)

Issue Correction:
Run dnf update qemu --releasever 2023.12.20261112 or dnf update --advisory ALAS2023-2026-3442 --releasever 2023.12.20261112 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation

New Packages:

aarch64:
    qemu-user-static-aarch64-11.0.0-5.amzn2023.aarch64
    qemu-pr-helper-11.0.0-5.amzn2023.aarch64
    qemu-img-11.0.0-5.amzn2023.aarch64
    qemu-tests-11.0.0-5.amzn2023.aarch64
    qemu-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-user-static-aarch64-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-system-aarch64-core-11.0.0-5.amzn2023.aarch64
    qemu-user-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-img-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-kvm-11.0.0-5.amzn2023.aarch64
    qemu-system-x86-11.0.0-5.amzn2023.aarch64
    qemu-debugsource-11.0.0-5.amzn2023.aarch64
    qemu-system-x86-core-11.0.0-5.amzn2023.aarch64
    qemu-pr-helper-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-tests-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-user-binfmt-11.0.0-5.amzn2023.aarch64
    qemu-tools-11.0.0-5.amzn2023.aarch64
    qemu-tools-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-system-aarch64-11.0.0-5.amzn2023.aarch64
    qemu-guest-agent-11.0.0-5.amzn2023.aarch64
    qemu-11.0.0-5.amzn2023.aarch64
    qemu-user-static-x86-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-user-static-11.0.0-5.amzn2023.aarch64
    qemu-guest-agent-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-system-x86-core-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-system-aarch64-core-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-kvm-core-11.0.0-5.amzn2023.aarch64
    qemu-user-static-x86-11.0.0-5.amzn2023.aarch64
    qemu-common-debuginfo-11.0.0-5.amzn2023.aarch64
    qemu-common-11.0.0-5.amzn2023.aarch64
    qemu-user-11.0.0-5.amzn2023.aarch64

noarch:
    qemu-docs-11.0.0-5.amzn2023.noarch

src:
    qemu-11.0.0-5.amzn2023.src

x86_64:
    qemu-common-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-kvm-core-11.0.0-5.amzn2023.x86_64
    qemu-guest-agent-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-11.0.0-5.amzn2023.x86_64
    qemu-img-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-tools-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-user-static-x86-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-tests-11.0.0-5.amzn2023.x86_64
    qemu-pr-helper-11.0.0-5.amzn2023.x86_64
    qemu-system-aarch64-core-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-kvm-11.0.0-5.amzn2023.x86_64
    qemu-system-x86-core-11.0.0-5.amzn2023.x86_64
    qemu-system-x86-11.0.0-5.amzn2023.x86_64
    qemu-user-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-system-aarch64-core-11.0.0-5.amzn2023.x86_64
    qemu-user-binfmt-11.0.0-5.amzn2023.x86_64
    qemu-system-x86-core-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-system-aarch64-11.0.0-5.amzn2023.x86_64
    qemu-tools-11.0.0-5.amzn2023.x86_64
    qemu-pr-helper-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-common-11.0.0-5.amzn2023.x86_64
    qemu-user-static-11.0.0-5.amzn2023.x86_64
    qemu-debugsource-11.0.0-5.amzn2023.x86_64
    qemu-tests-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-img-11.0.0-5.amzn2023.x86_64
    qemu-user-11.0.0-5.amzn2023.x86_64
    qemu-user-static-aarch64-debuginfo-11.0.0-5.amzn2023.x86_64
    qemu-guest-agent-11.0.0-5.amzn2023.x86_64
    qemu-user-static-x86-11.0.0-5.amzn2023.x86_64
    qemu-user-static-aarch64-11.0.0-5.amzn2023.x86_64