CVE-2026-72257ASoC: qcom: q6apm: fix NULL pointer dereference in graph_callback
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 5477518b8a0e8a45239646acd80c9bafc4401522 before a164e744d8de1c41049bd9a1452a4b6bbf5bd8bc; from 5477518b8a0e8a45239646acd80c9bafc4401522 before ec369eac0795cfa8f4d3a0cd35a1e8e15f780331; 5477518b8a0e8a45239646acd80c9bafc4401522 builds before 2c715f8a1e644ce4c3e8be5b0fd3f1f4704b73b3; from 5477518b8a0e8a45239646acd80c9bafc4401522 before ca028334343a140efda4b22e53cbce2c5e94a489; 5477518b8a0e8a45239646acd80c9bafc4401522 builds before 214af790e3a33ab73587de4c925c60a550eae9c6; 5477518b8a0e8a45239646acd80c9bafc4401522 builds before 2e9261761b35f0b67b7487688cd1365f535be0b3 | CNA record |
References
- https://git.kernel.org/stable/c/a164e744d8de1c41049bd9a1452a4b6bbf5bd8bc
- https://git.kernel.org/stable/c/ec369eac0795cfa8f4d3a0cd35a1e8e15f780331
- https://git.kernel.org/stable/c/2c715f8a1e644ce4c3e8be5b0fd3f1f4704b73b3
- https://git.kernel.org/stable/c/ca028334343a140efda4b22e53cbce2c5e94a489
- https://git.kernel.org/stable/c/214af790e3a33ab73587de4c925c60a550eae9c6
- https://git.kernel.org/stable/c/2e9261761b35f0b67b7487688cd1365f535be0b3
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.