QEMU virtio-snd Device virtio_snd_pcm_in_cb heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in QEMU. Impacted is the function virtio_snd_pcm_in_cb of the component virtio-snd Device. This manipulation causes heap-based overflow. This vulnerability is registered as CVE-2024-7730. No exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in QEMU (affected version unknown). It has been declared as critical. Affected by this vulnerability is the function virtio_snd_pcm_in_cb of the component virtio-snd Device. The manipulation with an unknown input leads to a heap-based overflow vulnerability. The CWE definition for the vulnerability is CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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 advisory is shared at gitlab.com. This vulnerability is known as CVE-2024-7730 since 08/13/2024. The exploitation appears to be easy. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/05/2025).

The vulnerability scanner Nessus provides a plugin with the ID 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)), which helps to determine the existence of the flaw in a target environment.

Applying the patch 98e77e3dd8dd6e7aa9a7dffa60f49c8c8a49d4e3 is able to eliminate this problem. The bugfix is ready for download at gitlab.com.

The vulnerability is also documented in the vulnerability database at Tenable (210736). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.4
CNA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 210736
Nessus Name: 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)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 98e77e3dd8dd6e7aa9a7dffa60f49c8c8a49d4e3

Timelineinfo

08/13/2024 🔍
08/13/2024 +0 days 🔍
08/13/2024 +0 days 🔍
08/05/2025 +357 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: gitlab.com
Status: Confirmed

CVE: CVE-2024-7730 (🔍)
GCVE (CVE): GCVE-0-2024-7730
GCVE (VulDB): GCVE-100-274345

Entryinfo

Created: 08/13/2024 14:43
Updated: 08/05/2025 21:07
Changes: 08/13/2024 14:43 (54), 11/11/2024 12:36 (2), 11/14/2024 15:26 (12), 08/05/2025 21:07 (10)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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