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CVE-2026-72257 (GCVE-0-2026-72257)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:54 – Updated: 2026-08-17 05:11
VLAI
Title
ASoC: qcom: q6apm: fix NULL pointer dereference in graph_callback
Summary
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 5477518b8a0e8a45239646acd80c9bafc4401522 , < a164e744d8de1c41049bd9a1452a4b6bbf5bd8bc (git)
Affected: 5477518b8a0e8a45239646acd80c9bafc4401522 , < ec369eac0795cfa8f4d3a0cd35a1e8e15f780331 (git)
Affected: 5477518b8a0e8a45239646acd80c9bafc4401522 , < 2c715f8a1e644ce4c3e8be5b0fd3f1f4704b73b3 (git)
Affected: 5477518b8a0e8a45239646acd80c9bafc4401522 , < ca028334343a140efda4b22e53cbce2c5e94a489 (git)
Affected: 5477518b8a0e8a45239646acd80c9bafc4401522 , < 214af790e3a33ab73587de4c925c60a550eae9c6 (git)
Affected: 5477518b8a0e8a45239646acd80c9bafc4401522 , < 2e9261761b35f0b67b7487688cd1365f535be0b3 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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        "dateUpdated": "2026-08-17T05:11:15.758Z",
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    "dateReserved": "2026-08-09T03:40:39.915Z",
    "dateUpdated": "2026-08-17T05:11:15.758Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-19T05:25:10+00:00",
      "cve": "CVE-2026-72257",
      "id": "CVE-2026-72257",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_affected": "76",
      "product_status:known_not_affected": "198",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ASoC: qcom: q6apm: fix NULL pointer dereference in graph_callback",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72257.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.