PublicDateAtUSN: 2019-12-22 20:15:00 UTC
Candidate: CVE-2019-19922
PublicDate: 2019-12-22 20:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19922
 https://git.kernel.org/linus/de53fd7aedb100f03e5d2231cfce0e4993282425
 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.9
 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=de53fd7aedb100f03e5d2231cfce0e4993282425
 https://github.com/kubernetes/kubernetes/issues/67577
 https://github.com/torvalds/linux/commit/de53fd7aedb100f03e5d2231cfce0e4993282425
 https://relistan.com/the-kernel-may-be-slowing-down-your-app
 https://ubuntu.com/security/notices/USN-4226-1
Description:
 kernel/sched/fair.c in the Linux kernel before 5.3.9, when cpu.cfs_quota_us
 is used (e.g., with Kubernetes), allows attackers to cause a denial of
 service against non-cpu-bound applications by generating a workload that
 triggers unwanted slice expiration, aka CID-de53fd7aedb1. (In other words,
 although this slice expiration would typically be seen with benign
 workloads, it is possible that an attacker could calculate how many stray
 requests are required to force an entire Kubernetes cluster into a
 low-performance state caused by slice expiration, and ensure that a DDoS
 attack sent that number of stray requests. An attack does not affect the
 stability of the kernel; it only causes mismanagement of application
 execution.)
Ubuntu-Description:
 It was discovered that in some situations the fair scheduler in the Linux
 kernel did not permit a process to use its full quota time slice. A local
 attacker could use this to cause a denial of service.
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H [5.5 MEDIUM]

Patches_linux:
 break-fix: 512ac999d2755d2b7109e996a76b6fb8b888631d de53fd7aedb100f03e5d2231cfce0e4993282425
upstream_linux: released (5.4~rc1)
precise/esm_linux: not-affected (3.0.0-12.20)
trusty_linux: ignored (out of standard support)
trusty/esm_linux: not-affected (3.11.0-12.19)
xenial_linux: not-affected (4.2.0-16.19)
esm-infra/xenial_linux: not-affected (4.2.0-16.19)
bionic_linux: released (4.15.0-69.78)
disco_linux: released (5.0.0-38.41)
eoan_linux: released (5.3.0-24.26)
focal_linux: not-affected (5.4.0-9.12)
devel_linux: not-affected (5.4.0-9.12)

Patches_linux-hwe:
upstream_linux-hwe: released (5.4~rc1)
precise/esm_linux-hwe: DNE
trusty_linux-hwe: DNE
trusty/esm_linux-hwe: DNE
xenial_linux-hwe: released (4.15.0-69.78~16.04.1)
esm-infra/xenial_linux-hwe: released (4.15.0-69.78~16.04.1)
bionic_linux-hwe: released (5.3.0-26.28~18.04.1)
disco_linux-hwe: DNE
eoan_linux-hwe: DNE
focal_linux-hwe: DNE
devel_linux-hwe: DNE

Patches_linux-hwe-edge:
upstream_linux-hwe-edge: released (5.4~rc1)
precise/esm_linux-hwe-edge: DNE
trusty_linux-hwe-edge: DNE
trusty/esm_linux-hwe-edge: DNE
xenial_linux-hwe-edge: ignored (was needs-triage now end-of-life)
esm-infra/xenial_linux-hwe-edge: ignored (was needs-triage now end-of-life)
bionic_linux-hwe-edge: ignored (was needs-triage now end-of-life)
disco_linux-hwe-edge: DNE
eoan_linux-hwe-edge: DNE
focal_linux-hwe-edge: DNE
devel_linux-hwe-edge: DNE

Patches_linux-lts-xenial:
upstream_linux-lts-xenial: released (5.4~rc1)
precise/esm_linux-lts-xenial: DNE
trusty_linux-lts-xenial: ignored (out of standard support)
trusty/esm_linux-lts-xenial: not-affected (4.4.0-13.29~14.04.1)
xenial_linux-lts-xenial: DNE
bionic_linux-lts-xenial: DNE
disco_linux-lts-xenial: DNE
eoan_linux-lts-xenial: DNE
focal_linux-lts-xenial: DNE
devel_linux-lts-xenial: DNE

Patches_linux-lts-trusty:
upstream_linux-lts-trusty: released (5.4~rc1)
precise/esm_linux-lts-trusty: not-affected (3.13.0-24.46~precise1)
trusty_linux-lts-trusty: DNE
trusty/esm_linux-lts-trusty: DNE
xenial_linux-lts-trusty: DNE
bionic_linux-lts-trusty: DNE
disco_linux-lts-trusty: DNE
eoan_linux-lts-trusty: DNE
focal_linux-lts-trusty: DNE
devel_linux-lts-trusty: DNE

Patches_linux-oem:
upstream_linux-oem: released (5.4~rc1)
precise/esm_linux-oem: DNE
trusty_linux-oem: DNE
trusty/esm_linux-oem: DNE
xenial_linux-oem: ignored (was needs-triage now end-of-life)
bionic_linux-oem: released (4.15.0-1063.72)
disco_linux-oem: ignored (reached end-of-life)
eoan_linux-oem: released (4.15.0-1063.72)
focal_linux-oem: DNE
devel_linux-oem: DNE

Patches_linux-oem-osp1:
upstream_linux-oem-osp1: released (5.4~rc1)
precise/esm_linux-oem-osp1: DNE
trusty_linux-oem-osp1: DNE
trusty/esm_linux-oem-osp1: DNE
xenial_linux-oem-osp1: DNE
bionic_linux-oem-osp1: released (5.0.0-1033.38)
disco_linux-oem-osp1: ignored (reached end-of-life)
eoan_linux-oem-osp1: released (5.0.0-1033.38)
focal_linux-oem-osp1: DNE
devel_linux-oem-osp1: DNE

Patches_linux-kvm:
upstream_linux-kvm: released (5.4~rc1)
precise/esm_linux-kvm: DNE
trusty_linux-kvm: DNE
trusty/esm_linux-kvm: DNE
xenial_linux-kvm: not-affected (4.4.0-1004.9)
esm-infra/xenial_linux-kvm: not-affected (4.4.0-1004.9)
bionic_linux-kvm: released (4.15.0-1050.50)
disco_linux-kvm: released (5.0.0-1024.26)
eoan_linux-kvm: released (5.3.0-1008.9)
focal_linux-kvm: not-affected (5.4.0-1004.4)
devel_linux-kvm: not-affected (5.4.0-1004.4)

Patches_linux-aws:
upstream_linux-aws: released (5.4~rc1)
precise/esm_linux-aws: DNE
trusty_linux-aws: ignored (out of standard support)
trusty/esm_linux-aws: not-affected (4.4.0-1002.2)
xenial_linux-aws: not-affected (4.4.0-1001.10)
esm-infra/xenial_linux-aws: not-affected (4.4.0-1001.10)
bionic_linux-aws: released (4.15.0-1054.56)
disco_linux-aws: released (5.0.0-1023.26)
eoan_linux-aws: released (5.3.0-1008.9)
focal_linux-aws: not-affected (5.4.0-1005.5)
devel_linux-aws: not-affected (5.4.0-1005.5)

Patches_linux-aws-5.0:
upstream_linux-aws-5.0: released (5.4~rc1)
precise/esm_linux-aws-5.0: DNE
trusty_linux-aws-5.0: DNE
trusty/esm_linux-aws-5.0: DNE
xenial_linux-aws-5.0: DNE
bionic_linux-aws-5.0: released (5.0.0-1023.26~18.04.1)
disco_linux-aws-5.0: DNE
eoan_linux-aws-5.0: DNE
focal_linux-aws-5.0: DNE
devel_linux-aws-5.0: DNE

Patches_linux-aws-hwe:
upstream_linux-aws-hwe: released (5.4~rc1)
precise/esm_linux-aws-hwe: DNE
trusty_linux-aws-hwe: DNE
trusty/esm_linux-aws-hwe: DNE
xenial_linux-aws-hwe: released (4.15.0-1054.56~16.04.1)
esm-infra/xenial_linux-aws-hwe: released (4.15.0-1054.56~16.04.1)
bionic_linux-aws-hwe: DNE
disco_linux-aws-hwe: DNE
eoan_linux-aws-hwe: DNE
focal_linux-aws-hwe: DNE
devel_linux-aws-hwe: DNE

Patches_linux-azure:
upstream_linux-azure: released (5.4~rc1)
precise/esm_linux-azure: DNE
trusty_linux-azure: ignored (out of standard support)
trusty/esm_linux-azure: released (4.15.0-1063.68~14.04.1)
xenial_linux-azure: released (4.15.0-1063.68)
esm-infra/xenial_linux-azure: released (4.15.0-1063.68)
bionic_linux-azure: released (5.0.0-1027.29~18.04.1)
disco_linux-azure: released (5.0.0-1027.29)
eoan_linux-azure: released (5.3.0-1008.9)
focal_linux-azure: not-affected (5.4.0-1006.6)
devel_linux-azure: not-affected (5.4.0-1006.6)

Patches_linux-azure-5.3:
upstream_linux-azure-5.3: released (5.4~rc1)
precise/esm_linux-azure-5.3: DNE
trusty_linux-azure-5.3: DNE
trusty/esm_linux-azure-5.3: DNE
xenial_linux-azure-5.3: DNE
bionic_linux-azure-5.3: released (5.3.0-1008.9~18.04.1)
disco_linux-azure-5.3: DNE
eoan_linux-azure-5.3: DNE
focal_linux-azure-5.3: DNE
devel_linux-azure-5.3: DNE

Patches_linux-azure-edge:
upstream_linux-azure-edge: released (5.4~rc1)
precise/esm_linux-azure-edge: DNE
trusty_linux-azure-edge: DNE
trusty/esm_linux-azure-edge: DNE
xenial_linux-azure-edge: ignored (was needs-triage now end-of-life)
bionic_linux-azure-edge: ignored (was needs-triage now end-of-life)
disco_linux-azure-edge: DNE
eoan_linux-azure-edge: DNE
focal_linux-azure-edge: DNE
devel_linux-azure-edge: DNE

Patches_linux-gcp:
upstream_linux-gcp: released (5.4~rc1)
precise/esm_linux-gcp: DNE
trusty_linux-gcp: DNE
trusty/esm_linux-gcp: DNE
xenial_linux-gcp: released (4.15.0-1049.52)
esm-infra/xenial_linux-gcp: released (4.15.0-1049.52)
bionic_linux-gcp: released (5.0.0-1028.29~18.04.1)
disco_linux-gcp: released (5.0.0-1028.29)
eoan_linux-gcp: released (5.3.0-1009.10)
focal_linux-gcp: not-affected (5.4.0-1005.5)
devel_linux-gcp: not-affected (5.4.0-1005.5)

Patches_linux-gcp-5.3:
upstream_linux-gcp-5.3: released (5.4~rc1)
precise/esm_linux-gcp-5.3: DNE
trusty_linux-gcp-5.3: DNE
trusty/esm_linux-gcp-5.3: DNE
xenial_linux-gcp-5.3: DNE
bionic_linux-gcp-5.3: released (5.3.0-1009.10~18.04.1)
disco_linux-gcp-5.3: DNE
eoan_linux-gcp-5.3: DNE
focal_linux-gcp-5.3: DNE
devel_linux-gcp-5.3: DNE

Patches_linux-gcp-edge:
upstream_linux-gcp-edge: released (5.4~rc1)
precise/esm_linux-gcp-edge: DNE
trusty_linux-gcp-edge: DNE
trusty/esm_linux-gcp-edge: DNE
xenial_linux-gcp-edge: DNE
bionic_linux-gcp-edge: ignored (was needs-triage now end-of-life)
disco_linux-gcp-edge: DNE
eoan_linux-gcp-edge: DNE
focal_linux-gcp-edge: DNE
devel_linux-gcp-edge: DNE

Patches_linux-gke-4.15:
upstream_linux-gke-4.15: released (5.4~rc1)
precise/esm_linux-gke-4.15: DNE
trusty_linux-gke-4.15: DNE
trusty/esm_linux-gke-4.15: DNE
xenial_linux-gke-4.15: DNE
bionic_linux-gke-4.15: released (4.15.0-1048.51)
disco_linux-gke-4.15: DNE
eoan_linux-gke-4.15: DNE
focal_linux-gke-4.15: DNE
devel_linux-gke-4.15: DNE

Patches_linux-gke-5.0:
upstream_linux-gke-5.0: released (5.4~rc1)
precise/esm_linux-gke-5.0: DNE
trusty_linux-gke-5.0: DNE
trusty/esm_linux-gke-5.0: DNE
xenial_linux-gke-5.0: DNE
bionic_linux-gke-5.0: released (5.0.0-1027.28~18.04.1)
disco_linux-gke-5.0: DNE
eoan_linux-gke-5.0: DNE
focal_linux-gke-5.0: DNE
devel_linux-gke-5.0: DNE

Patches_linux-oracle:
upstream_linux-oracle: released (5.4~rc1)
precise/esm_linux-oracle: DNE
trusty_linux-oracle: DNE
trusty/esm_linux-oracle: DNE
xenial_linux-oracle: released (4.15.0-1029.32~16.04.1)
esm-infra/xenial_linux-oracle: released (4.15.0-1029.32~16.04.1)
bionic_linux-oracle: released (4.15.0-1029.32)
disco_linux-oracle: released (5.0.0-1009.14)
eoan_linux-oracle: released (5.3.0-1007.8)
focal_linux-oracle: not-affected (5.4.0-1005.5)
devel_linux-oracle: not-affected (5.4.0-1005.5)

Patches_linux-oracle-5.0:
upstream_linux-oracle-5.0: released (5.4~rc1)
precise/esm_linux-oracle-5.0: DNE
trusty_linux-oracle-5.0: DNE
trusty/esm_linux-oracle-5.0: DNE
xenial_linux-oracle-5.0: DNE
bionic_linux-oracle-5.0: released (5.0.0-1009.14~18.04.1)
disco_linux-oracle-5.0: DNE
eoan_linux-oracle-5.0: DNE
focal_linux-oracle-5.0: DNE
devel_linux-oracle-5.0: DNE

Patches_linux-raspi2:
upstream_linux-raspi2: released (5.4~rc1)
precise/esm_linux-raspi2: DNE
trusty_linux-raspi2: DNE
trusty/esm_linux-raspi2: DNE
xenial_linux-raspi2: not-affected (4.2.0-1013.19)
bionic_linux-raspi2: released (4.15.0-1050.54)
disco_linux-raspi2: released (5.0.0-1024.25)
eoan_linux-raspi2: released (5.3.0-1014.16)
focal_linux-raspi2: ignored (was needed now end-of-life)
devel_linux-raspi2: ignored (was needed now end-of-life)

Patches_linux-snapdragon:
upstream_linux-snapdragon: released (5.4~rc1)
precise/esm_linux-snapdragon: DNE
trusty_linux-snapdragon: DNE
trusty/esm_linux-snapdragon: DNE
xenial_linux-snapdragon: not-affected (4.4.0-1012.12)
bionic_linux-snapdragon: released (4.15.0-1067.74)
disco_linux-snapdragon: ignored (was pending \[5.0.0-1028.30\] now end-of-life)
eoan_linux-snapdragon: DNE
focal_linux-snapdragon: DNE
devel_linux-snapdragon: DNE

Patches_linux-raspi2-5.3:
upstream_linux-raspi2-5.3: released (5.4~rc1)
precise/esm_linux-raspi2-5.3: DNE
trusty_linux-raspi2-5.3: DNE
trusty/esm_linux-raspi2-5.3: DNE
xenial_linux-raspi2-5.3: DNE
bionic_linux-raspi2-5.3: not-affected (5.3.0-1017.19~18.04.1)
eoan_linux-raspi2-5.3: DNE
focal_linux-raspi2-5.3: DNE
devel_linux-raspi2-5.3: DNE

Patches_linux-oem-5.6:
upstream_linux-oem-5.6: released (5.4~rc1)
precise/esm_linux-oem-5.6: DNE
trusty_linux-oem-5.6: DNE
trusty/esm_linux-oem-5.6: DNE
xenial_linux-oem-5.6: DNE
bionic_linux-oem-5.6: DNE
eoan_linux-oem-5.6: DNE
focal_linux-oem-5.6: not-affected (5.4.0-1002.4)
devel_linux-oem-5.6: not-affected (5.4.0-1002.4)

Patches_linux-gke-5.3:
upstream_linux-gke-5.3: released (5.4~rc1)
precise/esm_linux-gke-5.3: DNE
trusty_linux-gke-5.3: DNE
trusty/esm_linux-gke-5.3: DNE
xenial_linux-gke-5.3: DNE
bionic_linux-gke-5.3: not-affected (5.3.0-1011.12~18.04.1)
eoan_linux-gke-5.3: DNE
focal_linux-gke-5.3: DNE
devel_linux-gke-5.3: DNE

Patches_linux-oracle-5.3:
upstream_linux-oracle-5.3: released (5.4~rc1)
precise/esm_linux-oracle-5.3: DNE
trusty_linux-oracle-5.3: DNE
trusty/esm_linux-oracle-5.3: DNE
xenial_linux-oracle-5.3: DNE
bionic_linux-oracle-5.3: not-affected (5.3.0-1011.12~18.04.1)
eoan_linux-oracle-5.3: DNE
focal_linux-oracle-5.3: DNE
devel_linux-oracle-5.3: DNE