FKIE_CVE-2025-38404

Vulnerability from fkie_nvd - Published: 2025-07-25 14:15 - Updated: 2025-12-23 19:43
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: typec: displayport: Fix potential deadlock The deadlock can occur due to a recursive lock acquisition of `cros_typec_altmode_data::mutex`. The call chain is as follows: 1. cros_typec_altmode_work() acquires the mutex 2. typec_altmode_vdm() -> dp_altmode_vdm() -> 3. typec_altmode_exit() -> cros_typec_altmode_exit() 4. cros_typec_altmode_exit() attempts to acquire the mutex again To prevent this, defer the `typec_altmode_exit()` call by scheduling it rather than calling it directly from within the mutex-protected context.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/099cf1fbb8afc3771f408109f62bdec66f85160ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/63cff9f57e86b2dc25d7487ca0118df89a665296Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/749d9076735fb497aae60fbea9fff563f9ea3254Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/76cf1f33e7319fe74c94ac92f9814094ee8cc84bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7be0d1ea71f52595499da39cea484a895e8ed042Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/80c25d7916a44715338d4f8924c8e52af50d0b9fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c782f98eef14197affa8a7b91e6981420f109ea9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eb08fca56f1f39e4038cb9bac9864464b13b00aaPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel 6.1.143
linux linux_kernel 6.6.96
linux linux_kernel 6.12.36
linux linux_kernel 6.15.5
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16
linux linux_kernel 6.16
debian debian_linux 11.0
To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: displayport: Fix potential deadlock\n\nThe deadlock can occur due to a recursive lock acquisition of\n`cros_typec_altmode_data::mutex`.\nThe call chain is as follows:\n1. cros_typec_altmode_work() acquires the mutex\n2. typec_altmode_vdm() -\u003e dp_altmode_vdm() -\u003e\n3. typec_altmode_exit() -\u003e cros_typec_altmode_exit()\n4. cros_typec_altmode_exit() attempts to acquire the mutex again\n\nTo prevent this, defer the `typec_altmode_exit()` call by scheduling\nit rather than calling it directly from within the mutex-protected\ncontext."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: usb: typec: displayport: Soluciona un posible bloqueo El bloqueo puede ocurrir debido a una adquisici\u00f3n de bloqueo recursiva de `cros_typec_altmode_data::mutex`. La cadena de llamadas es la siguiente: 1. cros_typec_altmode_work() adquiere el mutex 2. typec_altmode_vdm() -\u0026gt; dp_altmode_vdm() -\u0026gt; 3. typec_altmode_exit() -\u0026gt; cros_typec_altmode_exit() 4. cros_typec_altmode_exit() intenta adquirir el mutex de nuevo Para evitar esto, aplaza la llamada a `typec_altmode_exit()` program\u00e1ndola en lugar de llamarla directamente desde dentro del contexto protegido por mutex."
    }
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  "id": "CVE-2025-38404",
  "lastModified": "2025-12-23T19:43:20.567",
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
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  "published": "2025-07-25T14:15:31.950",
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}


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  • 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.
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Detection rules are retrieved from Rulezet.