FKIE_CVE-2022-48997

Vulnerability from fkie_nvd - Published: 2024-10-21 20:15 - Updated: 2024-11-07 17:07
Severity ?
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: char: tpm: Protect tpm_pm_suspend with locks Currently tpm transactions are executed unconditionally in tpm_pm_suspend() function, which may lead to races with other tpm accessors in the system. Specifically, the hw_random tpm driver makes use of tpm_get_random(), and this function is called in a loop from a kthread, which means it's not frozen alongside userspace, and so can race with the work done during system suspend: tpm tpm0: tpm_transmit: tpm_recv: error -52 tpm tpm0: invalid TPM_STS.x 0xff, dumping stack for forensics CPU: 0 PID: 1 Comm: init Not tainted 6.1.0-rc5+ #135 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-20220807_005459-localhost 04/01/2014 Call Trace: tpm_tis_status.cold+0x19/0x20 tpm_transmit+0x13b/0x390 tpm_transmit_cmd+0x20/0x80 tpm1_pm_suspend+0xa6/0x110 tpm_pm_suspend+0x53/0x80 __pnp_bus_suspend+0x35/0xe0 __device_suspend+0x10f/0x350 Fix this by calling tpm_try_get_ops(), which itself is a wrapper around tpm_chip_start(), but takes the appropriate mutex. [Jason: reworked commit message, added metadata]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/23393c6461422df5bf8084a086ada9a7e17dc2baPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/25b78bf98b07ff5aceb9b1e24f72ec0236c5c053Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4e0d6c687c925e27fd4bc78a2721d10acf5614d6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/571b6bbbf54d835ea6120f65575cb55cd767e603Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d699373ac5f3545243d3c73a1ccab77fdef8cec6Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
To clipboard 

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  "descriptions": [
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nchar: tpm: Protect tpm_pm_suspend with locks\n\nCurrently tpm transactions are executed unconditionally in\ntpm_pm_suspend() function, which may lead to races with other tpm\naccessors in the system.\n\nSpecifically, the hw_random tpm driver makes use of tpm_get_random(),\nand this function is called in a loop from a kthread, which means it\u0027s\nnot frozen alongside userspace, and so can race with the work done\nduring system suspend:\n\n  tpm tpm0: tpm_transmit: tpm_recv: error -52\n  tpm tpm0: invalid TPM_STS.x 0xff, dumping stack for forensics\n  CPU: 0 PID: 1 Comm: init Not tainted 6.1.0-rc5+ #135\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-20220807_005459-localhost 04/01/2014\n  Call Trace:\n   tpm_tis_status.cold+0x19/0x20\n   tpm_transmit+0x13b/0x390\n   tpm_transmit_cmd+0x20/0x80\n   tpm1_pm_suspend+0xa6/0x110\n   tpm_pm_suspend+0x53/0x80\n   __pnp_bus_suspend+0x35/0xe0\n   __device_suspend+0x10f/0x350\n\nFix this by calling tpm_try_get_ops(), which itself is a wrapper around\ntpm_chip_start(), but takes the appropriate mutex.\n\n[Jason: reworked commit message, added metadata]"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: char: tpm: Proteger tpm_pm_suspend con bloqueos Actualmente, las transacciones tpm se ejecutan incondicionalmente en la funci\u00f3n tpm_pm_suspend(), lo que puede generar ejecuciones con otros accesores tpm en el sistema. Espec\u00edficamente, el controlador tpm hw_random hace uso de tpm_get_random(), y esta funci\u00f3n se llama en un bucle desde un kthread, lo que significa que no est\u00e1 congelada junto con el espacio de usuario, y por lo tanto puede competir con el trabajo realizado durante la suspensi\u00f3n del sistema: tpm tpm0: tpm_transmit: tpm_recv: error -52 tpm tpm0: TPM_STS.x 0xff no v\u00e1lido, volcando pila para an\u00e1lisis forense CPU: 0 PID: 1 Comm: init No contaminado 6.1.0-rc5+ #135 Nombre del hardware: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-20220807_005459-localhost 04/01/2014 Rastreo de llamadas: tpm_tis_status.cold+0x19/0x20 tpm_transmit+0x13b/0x390 tpm_transmit_cmd+0x20/0x80 tpm1_pm_suspend+0xa6/0x110 tpm_pm_suspend+0x53/0x80 __pnp_bus_suspend+0x35/0xe0 __device_suspend+0x10f/0x350 Solucione este problema llamando a tpm_try_get_ops(), que es un contenedor de tpm_chip_start(), pero toma el mutex apropiado. [Jason: mensaje de confirmaci\u00f3n redise\u00f1ado, metadatos agregados]"
    }
  ],
  "id": "CVE-2022-48997",
  "lastModified": "2024-11-07T17:07:08.743",
  "metrics": {
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      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.0,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2024-10-21T20:15:11.503",
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