{
  "cveId": "CVE-2023-53854",
  "url": "https://patchblox.com/security/cve/CVE-2023-53854",
  "summary": "CVE-2023-53854 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53854, released December 9, 2025. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "linux: In the Linux kernel, the following vulnerability has been resolved:  ASoC: mediatek: mt8186: Fix use-after-free in dr...",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ASoC: mediatek: mt8186: Fix use-after-free in driver remove path  When devm runs function in the \u0022remove\u0022 path for a device it runs them in the reverse order. That means that if you have parts of your driver that aren\u0027t using devm or are using \u0022roll your own\u0022 devm w/ devm_add_action_or_reset() you need to keep that in mind.  The mt8186 audio driver didn\u0027t quite get this right. Specifically, in mt8186_init_clock() it called mt8186_audsys_clk_register() and then went on to call a bunch of other devm function. The caller of mt8186_init_clock() used devm_add_action_or_reset() to call mt8186_deinit_clock() but, because of the intervening devm functions, the order was wrong.  Specifically at probe time, the order was: 1. mt8186_audsys_clk_register() 2. afe_priv-\u003Eclk = devm_kcalloc(...) 3. afe_priv-\u003Eclk[i] = devm_clk_get(...)  At remove time, the order (which should have been 3, 2, 1) was: 1. mt8186_audsys_clk_unregister() 3. Free all of afe_priv-\u003Eclk[i] 2. Free afe_priv-\u003Eclk  The above seemed to be causing a use-after-free. Luckily, it\u0027s easy to fix this by simply using devm more correctly. Let\u0027s move the devm_add_action_or_reset() to the right place. In addition to fixing the use-after-free, code inspection shows that this fixes a leak (missing call to mt8186_audsys_clk_unregister()) that would have happened if any of the syscon_regmap_lookup_by_phandle() calls in mt8186_init_clock() had failed.",
  "published": "2025-12-09T16:17:26Z",
  "severity": "",
  "epss": 0.00219,
  "epssPercentile": 0.12465,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.37-1",
      "fix": "DEBIAN-CVE-2023-53854",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53854",
      "released": "2025-12-09T16:17:26Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53854",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53854",
      "released": "2025-12-09T16:17:26Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "6.3.7-1",
      "fix": "DEBIAN-CVE-2023-53854",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-53854",
      "released": "2025-12-09T16:17:26Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}