CVE-2026-72257

In the Linux kernel, the following vulnerability has been resolved: ASoC: qcom: q6apm: fix NULL pointer dereference in graph_callback When q6apm_free_fragments() is called it frees rx_data.buf/tx_data.buf and sets them to NULL under graph->lock. A late DSP buffer-done response can race with this: graph_callback() passes the !graph->ar_graph guard (not yet NULL), acquires the lock, but then dereferences a now-NULL buf pointer to read buf[token].phys, crashing at virtual address 0x10. Add a NULL check for buf inside the mutex-protected section in both the write-done (DATA_CMD_RSP_WR_SH_MEM_EP_DATA_BUFFER_DONE_V2) and read-done (DATA_CMD_RSP_RD_SH_MEM_EP_DATA_BUFFER_V2) handlers and bail out cleanly if buffers have already been freed. This problem is only shown up recently while apr bus was updated to process the commands per service rather from single global queue.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/214af790e3a33ab73587de4c925c60a550eae9c6
https://git.kernel.org/stable/c/2c715f8a1e644ce4c3e8be5b0fd3f1f4704b73b3
https://git.kernel.org/stable/c/2e9261761b35f0b67b7487688cd1365f535be0b3
https://git.kernel.org/stable/c/a164e744d8de1c41049bd9a1452a4b6bbf5bd8bc
https://git.kernel.org/stable/c/ca028334343a140efda4b22e53cbce2c5e94a489
https://git.kernel.org/stable/c/ec369eac0795cfa8f4d3a0cd35a1e8e15f780331

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:21

Updated : 2026-08-17 06:18

NVD link : CVE-2026-72257

Mitre link : CVE-2026-72257

CVE.ORG link : CVE-2026-72257

JSON object : View

Products Affected

No product.

CWE

No CWE.

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