CVE-2026-43137 ASoC: SOF: Intel: hda: Fix NULL pointer dereference
A NULL pointer dereference in the Linux kernel's Intel HDA audio driver can cause a system crash when topology mismatches occur.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-43137?
CVE-2026-43137 is a medium-severity vulnerability in Linux kernel, published on 6 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
ASoC: SOF: Intel: hda: Fix NULL pointer dereference
If there's a mismatch between the DAI links in the machine driver and the topology, it is possible that the playback/capture widget is not set, especially in the case of loopback capture for echo reference where we use the dummy DAI link. Return the error when the widget is not set to avoid a null pointer dereference like below when the topology is broken.
RIP: 0010:hda_dai_get_ops.isra.0+0x14/0xa0 [snd_sof_intel_hda_common]
Weakness: CWE-476
Which versions are affected by CVE-2026-43137?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-43137?
Apply the vendor's patch.
Is CVE-2026-43137 being exploited?
There is no known exploitation of CVE-2026-43137 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-85812, BELL-CVE-2026-43137, DEBIAN-CVE-2026-43137, GHSA-f9xw-88w2-23h7, ROOT-OS-DEBIAN-11-CVE-2026-43137, ROOT-OS-DEBIAN-12-CVE-2026-43137 and 3 more.