CVE-2026-96674: alsa-lib through 1.2.16.1 Integer Overflow via Topology File
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.
Affected Software
Event History
Frequently Asked Questions
What must an attacker provide to trigger the issue?
The attacker must cause the application to process a crafted ALSA topology file. The malformed file uses values that overflow a 32-bit combined-element-size calculation and bypass the affected bounds checks.
What impact should be expected if exploitation succeeds?
The topology decoder can read beyond the supplied topology buffer. This may disclose sensitive data or crash the application; the provided data does not establish code execution or integrity impact.
Are systems affected without any attacker interaction?
The supplied severity vector indicates local attack access and user interaction are required. Exploitation depends on an application being induced to process the attacker-controlled topology file.