CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
44.3%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-115.116 | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < 5.4.0-45.49 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-187.217 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1080.84 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1022.22 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1076.80 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1112.124 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.3 | < 5.3.0-1033.35 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < 5.4.0-1022.22~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1080.84~16.04.1 | UNKNOWN |
git.kernel.org/pub/scm/linux/kernel/git/colyli/bcache-patches.git/tree/for-test/0001-bcache-fix-potential-deadlock-problem-in-btree_gc_co.patch
launchpad.net/bugs/cve/CVE-2020-12771
lkml.org/lkml/2020/4/26/87
lore.kernel.org/lkml/[email protected]/
nvd.nist.gov/vuln/detail/CVE-2020-12771
security-tracker.debian.org/tracker/CVE-2020-12771
ubuntu.com/security/notices/USN-4462-1
ubuntu.com/security/notices/USN-4463-1
ubuntu.com/security/notices/USN-4465-1
ubuntu.com/security/notices/USN-4483-1
ubuntu.com/security/notices/USN-4485-1
www.cve.org/CVERecord?id=CVE-2020-12771
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
44.3%