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FKIE_CVE-2021-4149

Vulnerability from fkie_nvd - Published: 2022-03-23 20:15 - Updated: 2026-06-17 04:19
Severity
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
A vulnerability was found in btrfs_alloc_tree_b in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service (DOS) due to a deadlock problem.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2026485Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2022/07/msg00000.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://lkml.org/lkml/2021/10/18/885Exploit, Mailing List, Patch, Third Party Advisory
secalert@redhat.comhttps://lkml.org/lkml/2021/9/13/2565Exploit, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2026485Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/07/msg00000.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lkml.org/lkml/2021/10/18/885Exploit, Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lkml.org/lkml/2021/9/13/2565Exploit, Mailing List, Third Party Advisory
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15
linux linux_kernel 5.15
debian debian_linux 9.0
To clipboard 

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          "vendor": "n/a",
          "versions": [
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              "status": "affected",
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    },
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      "lang": "es",
      "value": "Se encontr\u00f3 una vulnerabilidad en la funci\u00f3n  btrfs_alloc_tree_b en el archivo fs/btrfs/extent-tree.c en el kernel de Linux debido a una operaci\u00f3n de bloqueo inapropiada en btrfs. En este fallo, un usuario con privilegio local puede causar una denegaci\u00f3n de servicio (DOS) debido a un problema de bloqueo"
    }
  ],
  "id": "CVE-2021-4149",
  "lastModified": "2026-06-17T04:19:07.233",
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}



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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.
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