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
14.2%
An issue was discovered in the Linux kernel before 5.4.7. The
prb_calc_retire_blk_tmo() function in net/packet/af_packet.c can result in
a denial of service (CPU consumption and soft lockup) in a certain failure
case involving TPACKET_V3, aka CID-b43d1f9f7067.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | <Β 4.15.0-88.88 | UNKNOWN |
ubuntu | 19.10 | noarch | linux | <Β 5.3.0-40.32 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | <Β 4.4.0-173.203 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | <Β 4.15.0-1060.62 | UNKNOWN |
ubuntu | 19.10 | noarch | linux-aws | <Β 5.3.0-1011.12 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | <Β 4.4.0-1061.65 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | <Β 4.4.0-1101.112 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | <Β 4.15.0-1060.62~16.04.1 | UNKNOWN |
ubuntu | 19.10 | noarch | linux-azure | <Β 5.3.0-1013.14 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-azure | <Β 4.15.0-1071.76~14.04.1 | UNKNOWN |
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.7
git.kernel.org/linus/b43d1f9f7067c6759b1051e8ecb84e82cef569fe
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b43d1f9f7067c6759b1051e8ecb84e82cef569fe
launchpad.net/bugs/cve/CVE-2019-20812
nvd.nist.gov/vuln/detail/CVE-2019-20812
security-tracker.debian.org/tracker/CVE-2019-20812
www.cve.org/CVERecord?id=CVE-2019-20812
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
14.2%