CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
14.2%
An issue was discovered in the Linux kernel before 5.6.5. There is a
use-after-free in block/bfq-iosched.c related to bfq_idle_slice_timer_body.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-101.102 | UNKNOWN |
ubuntu | 19.10 | noarch | linux | < 5.3.0-53.47 | UNKNOWN |
ubuntu | 20.04 | noarch | linux | < 5.4.0-31.35 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1067.71 | UNKNOWN |
ubuntu | 19.10 | noarch | linux-aws | < 5.3.0-1019.21 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1011.11 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.3 | < 5.3.0-1019.21~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1067.71~16.04.1 | UNKNOWN |
ubuntu | 19.10 | noarch | linux-azure | < 5.3.0-1022.23 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < 5.4.0-1012.12 | UNKNOWN |
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.5
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2f95fa5c955d0a9987ffdc3a095e2f4e62c5f2a9
git.kernel.org/linus/2f95fa5c955d0a9987ffdc3a095e2f4e62c5f2a9 (5.7-rc1)
github.com/torvalds/linux/commit/2f95fa5c955d0a9987ffdc3a095e2f4e62c5f2a9
launchpad.net/bugs/cve/CVE-2020-12657
nvd.nist.gov/vuln/detail/CVE-2020-12657
patchwork.kernel.org/patch/11447049/
security-tracker.debian.org/tracker/CVE-2020-12657
ubuntu.com/security/notices/USN-4363-1
ubuntu.com/security/notices/USN-4367-1
ubuntu.com/security/notices/USN-4368-1
ubuntu.com/security/notices/USN-4369-1
www.cve.org/CVERecord?id=CVE-2020-12657
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
14.2%