Description
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 alh_data is attached, which could lead to NULL pointer dereference. We could check for this NULL pointer in sof_ipc4_prepare_copier_module() and avoid the crash, but a similar loop in sof_ipc4_widget_setup_comp_dai() 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
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
a150345aa758492e05d2934f318ce7c2566b1cfe to < ec8f5a4fe296c311d4b45db7a25a0e9e69802372affecteda150345aa758492e05d2934f318ce7c2566b1cfe to < 6b6b47c1aa717a0ed3400e00a81dfea686a41d7faffecteda150345aa758492e05d2934f318ce7c2566b1cfe to < 87c8768a96092ce75cd47fe076db5080db7ac515affecteda150345aa758492e05d2934f318ce7c2566b1cfe to < 93c6c2e5801aab09ef1ef99f248f3cd323c3f152affecteda150345aa758492e05d2934f318ce7c2566b1cfe to < 6fd60136d256b3b948333ebdb3835f41a95ab7efaffected
Linux Linux
Default version status: affected
6.0affected0 to < 6.0unaffected6.1.191 to ≤ 6.1.*unaffected6.6.160 to ≤ 6.6.*unaffected6.12.17 to ≤ 6.12.*unaffected6.13.5 to ≤ 6.13.*unaffected6.14 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/ec8f5a4fe296c311d4b45db7a25a0e9e69802372 ↗
- https://git.kernel.org/stable/c/6b6b47c1aa717a0ed3400e00a81dfea686a41d7f ↗
- https://git.kernel.org/stable/c/87c8768a96092ce75cd47fe076db5080db7ac515 ↗
- https://git.kernel.org/stable/c/93c6c2e5801aab09ef1ef99f248f3cd323c3f152 ↗
- https://git.kernel.org/stable/c/6fd60136d256b3b948333ebdb3835f41a95ab7ef ↗