FKIE_CVE-2022-49849

Vulnerability from fkie_nvd - Published: 2025-05-01 15:16 - Updated: 2025-11-10 21:02
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: btrfs: fix match incorrectly in dev_args_match_device syzkaller found a failed assertion: assertion failed: (args->devid != (u64)-1) || args->missing, in fs/btrfs/volumes.c:6921 This can be triggered when we set devid to (u64)-1 by ioctl. In this case, the match of devid will be skipped and the match of device may succeed incorrectly. Patch 562d7b1512f7 introduced this function which is used to match device. This function contains two matching scenarios, we can distinguish them by checking the value of args->missing rather than check whether args->devid and args->uuid is default value.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0fca385d6ebc3cabb20f67bcf8a71f1448bdc001Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bc6c127c377010f136360552ebf91c2723081c1bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c9fe4719c662e0af17eea723cf345e37719fd3c9Patch
Impacted products
Vendor Product Version
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
To clipboard 

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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix match incorrectly in dev_args_match_device\n\nsyzkaller found a failed assertion:\n\n  assertion failed: (args-\u003edevid != (u64)-1) || args-\u003emissing, in fs/btrfs/volumes.c:6921\n\nThis can be triggered when we set devid to (u64)-1 by ioctl. In this\ncase, the match of devid will be skipped and the match of device may\nsucceed incorrectly.\n\nPatch 562d7b1512f7 introduced this function which is used to match device.\nThis function contains two matching scenarios, we can distinguish them by\nchecking the value of args-\u003emissing rather than check whether args-\u003edevid\nand args-\u003euuid is default value."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: correcci\u00f3n de coincidencia incorrecta en dev_args_match_device syzkaller encontr\u00f3 una aserci\u00f3n fallida: assertion failed: (args-\u0026gt;devid != (u64)-1) || args-\u0026gt;missing, en fs/btrfs/volumes.c:6921 Esto puede activarse cuando configuramos devid en (u64)-1 mediante ioctl. En este caso, se omitir\u00e1 la coincidencia de devid y la coincidencia de dispositivo puede tener \u00e9xito incorrectamente. El parche 562d7b1512f7 introdujo esta funci\u00f3n que se utiliza para hacer coincidir dispositivos. Esta funci\u00f3n contiene dos escenarios de coincidencia; podemos distinguirlos comprobando el valor de args-\u0026gt;missing en lugar de comprobar si args-\u0026gt;devid y args-\u0026gt;uuid son los valores predeterminados."
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  "id": "CVE-2022-49849",
  "lastModified": "2025-11-10T21:02:50.920",
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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",
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  "published": "2025-05-01T15:16:08.450",
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