AZL-62845
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-62845.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-62845
- Upstream
- Published
- 2025-03-27T14:15:48Z
- Modified
- 2026-04-01T05:20:09.263392Z
- Summary
- CVE-2025-21870 affecting package kernel 6.6.126.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ASoC: SOF: ipc4-topology: Harden loops for looking up ALH copiers
Other, non DAI copier widgets could have the same stream name (sname) as the ALH copier and in that case the copier->data is NULL, no alhdata is attached, which could lead to NULL pointer dereference. We could check for this NULL pointer in sofipc4preparecopiermodule() and avoid the crash, but a similar loop in sofipc4widgetsetupcompdai() will miscalculate the ALH device count, causing broken audio.
The correct fix is to harden the matching logic by making sure that the 1. widget is a DAI widget - so dai = w->private is valid 2. the dai (and thus the copier) is ALH copier
- References