CVE-2024-7730

Name	CVE-2024-7730
Description	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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
qemu (PTS)	bullseye	1:5.2+dfsg-11+deb11u3	vulnerable
	bullseye (security)	1:5.2+dfsg-11+deb11u2	vulnerable
	bookworm	1:7.2+dfsg-7+deb12u7	vulnerable
	sid, trixie	1:9.1.1+ds-5	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
qemu	source	(unstable)	1:9.1.0+ds-1

Notes

[bookworm] - qemu <no-dsa> (Minor issue)
https://lore.kernel.org/qemu-devel/virtio-snd-fuzz-2427-fix-v1-manos.pitsidianakis@linaro.org/
https://gitlab.com/qemu-project/qemu/-/issues/2427
Fixed by: https://gitlab.com/qemu-project/qemu/-/commit/98e77e3dd8dd6e7aa9a7dffa60f49c8c8a49d4e3 (v9.1.0-rc0)