ALSA Project alsa-lib up to 1.2.16.1 Topology Control src/topology/ctl.c integer overflow

Summaryinfo

A vulnerability labeled as problematic has been found in ALSA Project alsa-lib up to 1.2.16.1. The impacted element is an unknown function of the file src/topology/ctl.c of the component Topology Control. The manipulation results in integer overflow. This vulnerability is known as CVE-2026-96674. Attacking locally is a requirement. No exploit is available.

Detailsinfo

A vulnerability was found in ALSA Project alsa-lib up to 1.2.16.1. It has been classified as problematic. Affected is an unknown part of the file src/topology/ctl.c of the component Topology Control. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

alsa-lib through 1.2.16.1 computes combined topology element size using 32-bit arithmetic in src/topology/ctl.c, allowing integer overflow that defeats bounds checks. Attackers can supply crafted topology files that wrap size calculations, causing the decoder to read beyond the topology buffer and potentially leak sensitive data or crash the application.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-96674 since 09/23/2026. The exploitability is told to be easy. The attack needs to be approached locally. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/23/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Project Management Software

Vendor

• ALSA Project

Name

• alsa-lib

Version

• 1.2.16.0
• 1.2.16.1

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CPE 2.2info

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