Description
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.
References6
- github.com/alsa-project/alsa-lib
- github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/topology/ct…
- github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/topology/ct…
- github.com/alsa-project/alsa-lib/blob/v1.2.16.1/src/topology/ct…
- github.com/alsa-project/alsa-lib/pull/527
- www.vulncheck.com/advisories/alsa-lib-through-1.2.16.1-integer-…
Metrics
- CVSS 3.1
-
4.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L - CVSS 4.0
-
4.8
MEDIUM
Score source: CNA
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 2 · as of 9 November 2026
- CWE
- CWE-190
Could this be exploited in your environment?
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