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CVE-2020-12771 (GCVE-0-2020-12771)

Vulnerability from cvelistv5 – Published: 2020-05-09 20:16 – Updated: 2024-08-04 12:04
VLAI
Summary
An issue was discovered in the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
URL Tags
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4463-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4465-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4462-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4483-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4485-1/ vendor-advisoryx_refsource_UBUNTU
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://www.oracle.com/security-alerts/cpuApr2021.html x_refsource_MISC
https://security.netapp.com/advisory/ntap-2020060… x_refsource_CONFIRM
https://lkml.org/lkml/2020/4/26/87 x_refsource_CONFIRM
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      "id": "CVE-2020-12771",
      "lastModified": "2024-11-21T05:00:15.450",
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      "published": "2020-05-09T21:15:11.210",
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    "microsoft_vex": {
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      "cve": "CVE-2020-12771",
      "id": "msrc_CVE-2020-12771",
      "initial_release_date": "2020-05-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "An issue was discovered in the Linux kernel through 5.6.11. btree_gc_coalesce in drivers/md/bcache/btree.c has a deadlock if a coalescing operation fails.",
      "url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-12771.json",
      "version": "1"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:31:48+00:00",
      "cve": "CVE-2020-12771",
      "id": "CVE-2020-12771",
      "initial_release_date": "2020-04-26T00:00:00+00:00",
      "product_status:known_not_affected": "104",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: deadlock if a coalescing operation fails in btree_gc_coalesce function in drivers/md/bcache/btree.c",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-12771.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-03T00:52:06Z",
      "cve": "CVE-2020-12771",
      "id": "CVE-2020-12771",
      "initial_release_date": "2023-02-15T03:58:44Z",
      "product_status:known_affected": "471",
      "product_status:known_not_affected": "174",
      "product_status:recommended": "1495",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2020-12771",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-12771.json",
      "version": "42"
    }
  }
}



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Tags
Taxonomy of the tags.





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

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.