CVE-2024-7730: Qemu-kvm: virtio-snd: heap buffer overflow in virtio_snd_pcm_in_cb()
First published: Tue Aug 13 2024(Updated: )
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.
Credit: patrick@puiterwijk.org patrick@puiterwijk.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/qemu | <=1:5.2+dfsg-11+deb11u3<=1:5.2+dfsg-11+deb11u2<=1:7.2+dfsg-7+deb12u7 | 1:9.2.0+ds-2 |
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Reference Links
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-7730
- https://nvd.nist.gov/vuln/detail/CVE-2024-7730
- https://launchpad.net/bugs/cve/CVE-2024-7730
- https://security-tracker.debian.org/tracker/CVE-2024-7730
- https://ubuntu.com/security/CVE-2024-7730
- https://lore.kernel.org/qemu-devel/virtio-snd-fuzz-2427-fix-v1-manos.pitsidianakis@linaro.org/
- https://gitlab.com/qemu-project/qemu/-/issues/2427
- https://gitlab.com/qemu-project/qemu/-/commit/98e77e3dd8dd6e7aa9a7dffa60f49c8c8a49d4e3
- https://access.redhat.com/security/cve/CVE-2024-7730
- https://bugzilla.redhat.com/show_bug.cgi?id=2304289
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