A heap buffer overflow was found in the virtio-snd device in QEMU. When reading input audio in the virtio-snd input callback, virtio_snd_pcm_in_cb, the function did not check whether the iov can fit the data buffer. This issue can trigger an out-of-bounds write if the size of the virtio queue element is equal to virtio_snd_pcm_status, which makes the available space for audio data zero.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A heap buffer overflow was found in the virtio-snd device in QEMU. When reading input audio in the virtio-     snd input callback, virtio_snd_pcm_in_cb, the function did not check whether the iov can fit the data     buffer. This issue can trigger an out-of-bounds write if the size of the virtio queue element is equal to     virtio_snd_pcm_status, which makes the available space for audio data zero. (CVE-2024-7730)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7094-1 advisory.

    It was discovered that QEMU incorrectly handled memory during certain VNC operations. A remote attacker     could possibly use this issue to cause QEMU to consume resources, resulting in a denial of service. This     issue only affected Ubuntu 14.04 LTS. (CVE-2019-20382)

    It was discovered that QEMU incorrectly handled certain memory copy operations when loading ROM contents.
    If a user were tricked into running an untrusted kernel image, a remote attacker could possibly use this     issue to run arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-13765)

    Aviv Sasson discovered that QEMU incorrectly handled Slirp networking. A remote attacker could use this     issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This     issue only affected Ubuntu 14.04 LTS. (CVE-2020-1983)

    It was discovered that the SLiRP networking implementation of the QEMU emulator did not properly manage     memory under certain circumstances. An attacker could use this to cause a heap-based buffer overflow or     other out- of-bounds access, which can lead to a denial of service (application crash) or potential     execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-7039)

    It was discovered that the SLiRP networking implementation of the QEMU emulator misuses snprintf return     values. An attacker could use this to cause a denial of service (application crash) or potentially execute     arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-8608)

    It was discovered that QEMU SLiRP networking incorrectly handled certain udp packets. An attacker inside a     guest could possibly use this issue to leak sensitive information from the host. This issue only affected     Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-3592, CVE-2021-3594)

    It was discovered that QEMU had a DMA reentrancy issue, leading to a use-after-free vulnerability. An     attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04     LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-3019)

    It was discovered that QEMU had a flaw in Virtio PCI Bindings, leading to a triggerable crash via     vhost_net_stop. An attacker inside a guest could possibly use this issue to cause a denial of service.
    This issue only affected Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2024-4693)

    It was discovered that QEMU incorrectly handled memory in virtio-sound, leading to a heap-based buffer     overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary     code. This issue only affected Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2024-7730)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
230693	Linux Distros Unpatched Vulnerability : CVE-2024-7730	Nessus	Misc.	high
210736	Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : QEMU vulnerabilities (USN-7094-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

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CVE-2024-7730

high

Tenable Plugins

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medium