CVE-2024-7730: A heap buffer overflow was found in the virtio-snd device in QEMU

Q: How do I fix CVE-2024-7730?

qemu: upgrade to 9.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2024-7730 being exploited?

CVE-2024-7730 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2024-7730 affect?

CVE-2024-7730 affects qemu. Severity is high (CVSS 7.4). 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 a

Routine

HIGH 7.4UPGRADE

CVE-2024-7730 is a high-severity flaw (CVSS 7.4) affecting qemu. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.4 (High)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-122
Published	2024-11-14
Last modified	2026-06-17

Publisher (CNA): Fedora Project · Vendor: qemu

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-11-14 12:15 UTCPublished CVE record published
2026-06-17 08:20 UTCUpdated Record last modified

qemu qemu UPGRADE

Affected: < 9.1.0

Fixed in: 9.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy qemu || rpm -q qemu || qemu --version

2. UPGRADE to 9.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade qemu

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade qemu

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-7730?

qemu: upgrade to 9.1.0. Exact commands for each OS are on this page.

Is CVE-2024-7730 being exploited?

CVE-2024-7730 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-7730 affect?

CVE-2024-7730 affects qemu. Severity is high (CVSS 7.4). 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 a

How urgent is CVE-2024-7730?

Priority 31/100. High severity

Software pages

QEMU vulnerabilities

Related CVEs

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References

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