CVE-2025-21847 ASoC: SOF: stream-ipc: Check for cstream nullity in sof_ipc_msg_data()

What is CVE-2025-21847?

CVE-2025-21847 is a medium-severity vulnerability in Linux kernel, published on 12 Mar 2025. 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: stream-ipc: Check for cstream nullity in sof_ipc_msg_data()

The nullity of sps->cstream should be checked similarly as it is done in sof_set_stream_data_offset() function. Assuming that it is not NULL if sps->stream is NULL is incorrect and can lead to NULL pointer dereference.

Weakness: CWE-476

Which versions are affected by CVE-2025-21847?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2025-21847?

Apply the vendor's patch.

Is CVE-2025-21847 being exploited?

There is no known exploitation of CVE-2025-21847 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-58544, BELL-CVE-2025-21847, DEBIAN-CVE-2025-21847, GHSA-3p4h-43x6-7rg4, ROOT-OS-UBUNTU-2404-CVE-2025-21847, UBUNTU-CVE-2025-21847.