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CVE-2020-12771

Affected software7 products, listed below
Severity5.5 Medium CVSS 3.1 2 scores
WeaknessCWE-667
Published9 May 2020
Updated17 Jun 2026

Description

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 6 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 0.52% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

5.5 MEDIUM v3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 2.0 4.9 none AV:L/AC:L/Au:N/C:N/I:N/A:C NVD Primary

Affected software and releases

Products and versions

24 products, 28 version entries
SourceVendorProductSchemeAffected versions
nvd canonical ubuntu linux generic 14.04 · 16.04 · 18.04 · 20.04
nvd debian debian linux generic 9.0
nvd linux linux kernel generic ≤ 5.6.11
nvd netapp a700s firmware generic any version
nvd netapp active iq unified manager generic any version
nvd netapp cloud backup generic any version
nvd netapp element software generic any version
nvd netapp h300e firmware generic any version
nvd netapp h300s firmware generic any version
nvd netapp h410c firmware generic any version
nvd netapp h410s firmware generic any version
nvd netapp h500e firmware generic any version
nvd netapp h500s firmware generic any version
nvd netapp h610c firmware generic any version
nvd netapp h610s firmware generic any version
nvd netapp h615c firmware generic any version
nvd netapp h700e firmware generic any version
nvd netapp h700s firmware generic any version
nvd netapp hci bootstrap os generic any version
nvd netapp hci management node generic any version
nvd netapp solidfire generic any version
nvd netapp steelstore cloud integrated storage generic any version
nvd opensuse leap generic 15.1 · 15.2
nvd oracle sd-wan edge generic 8.2

References

URLTags
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00071.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00019.html Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html Mailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html Mailing List, Third Party Advisory
https://lkml.org/lkml/2020/4/26/87 Exploit, Mailing List, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20200608-0001/ Third Party Advisory
https://usn.ubuntu.com/4462-1/ Third Party Advisory
https://usn.ubuntu.com/4463-1/ Third Party Advisory
https://usn.ubuntu.com/4465-1/ Third Party Advisory

Timeline

Published2020-05-09By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.