CVE-2020-12771

CWE-667CWE-833CWE-20 — Improper Input Validation16 documents9 sources
Severity
5.5MEDIUM
EPSS
0.0%
top 85.31%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Linux Linux KernelCanonical Ubuntu LinuxDebian Debian Linux+2 more
Timeline
PublishedMay 9
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages10 packages

▶NVDlinux/linux_kernel5.6.11
▶Debianlinux< 5.7.6-1+3
▶Ubuntulinux< 4.4.0-187.217
▶Ubuntulinux-aws< 4.4.0-1112.124+1
▶Ubuntulinux-kvm< 4.4.0-1078.85

Also affects: Debian Linux 9.0, Ubuntu Linux 14.04, 16.04, 18.04, 20.04

Patches

Patch: lkml.org ↗Patch: www.oracle.com ↗Patch: lkml.org ↗

🔴Vulnerability Details

5
GHSA
GHSA-x72c-34x9-qrm4: An issue was discovered in the Linux kernel through 5↗2022-05-24
▶
OSV
linux-hwe, linux-aws-5.3, linux-azure-5.3, linux-gke-5.3 vulnerabilities↗2020-08-23
▶
OSV
linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities↗2020-08-18
▶
CVEList
CVE-2020-12771: An issue was discovered in the Linux kernel through 5↗2020-05-09
▶
OSV
CVE-2020-12771: An issue was discovered in the Linux kernel through 5↗2020-05-09
▶

📋Vendor Advisories

8
Ubuntu
Linux kernel vulnerabilities↗2020-09-03
▶
Ubuntu
Linux kernel vulnerabilities↗2020-09-03
▶
Ubuntu
linux kernel vulnerabilities↗2020-08-23
▶
Ubuntu
Linux kernel vulnerability↗2020-08-18
▶
Ubuntu
Linux kernel vulnerabilities↗2020-08-18
▶

💬Community

2
Bugzilla
CVE-2020-12771 kernel: deadlock if a coalescing operation fails in btree_gc_coalesce function in drivers/md/bcache/btree.c↗2020-05-12
▶
Bugzilla
CVE-2020-12771 kernel: deadlock if a coalescing operation fails in btree_gc_coalesce function in drivers/md/bcache/btree.c [fedora-all]↗2020-05-12
▶