CVE-2019-19922

Priority
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
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):not-affected (3.0.0-12.20)
Ubuntu 14.04 ESM (Trusty Tahr):not-affected (3.11.0-12.19)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.2.0-16.19)
Ubuntu 18.04 LTS (Bionic Beaver):pending (4.15.0-69.78)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-38.41)
Ubuntu 19.10 (Eoan Ermine):pending (5.3.0-24.26)
Ubuntu 20.04 (Focal Fossa):not-affected (5.4.0-9.12)
Patches:
Introduced by
512ac999d2755d2b7109e996a76b6fb8b888631d
Fixed by
de53fd7aedb100f03e5d2231cfce0e4993282425
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):not-affected (4.4.0-1002.2)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1001.10)
Ubuntu 18.04 LTS (Bionic Beaver):pending (4.15.0-1054.56)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1023.26)
Ubuntu 19.10 (Eoan Ermine):pending (5.3.0-1008.9)
Ubuntu 20.04 (Focal Fossa):needed
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):released (5.0.0-1023.26~18.04.1)
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):pending (4.15.0-1054.56~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):pending (4.15.0-1063.68~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):pending (4.15.0-1063.68)
Ubuntu 18.04 LTS (Bionic Beaver):released (5.0.0-1027.29~18.04.1)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1027.29)
Ubuntu 19.10 (Eoan Ermine):pending (5.3.0-1008.9)
Ubuntu 20.04 (Focal Fossa):needed
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):pending (5.3.0-1008.9~18.04.1)
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (was needs-triage now end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):needs-triage
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):pending (4.15.0-1049.52)
Ubuntu 18.04 LTS (Bionic Beaver):pending (5.0.0-1028.29~18.04.1)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1028.29)
Ubuntu 19.10 (Eoan Ermine):pending (5.3.0-1009.10)
Ubuntu 20.04 (Focal Fossa):needed
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):pending (5.3.0-1009.10~18.04.1)
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):needs-triage
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):pending (4.15.0-1048.51)
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):released (5.0.0-1027.28~18.04.1)
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):pending (4.15.0-69.78~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):pending (5.3.0-26.28~18.04.1)
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):needs-triage
Ubuntu 18.04 LTS (Bionic Beaver):ignored (was needs-triage now end-of-life)
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1004.9)
Ubuntu 18.04 LTS (Bionic Beaver):pending (4.15.0-1050.50)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1024.26)
Ubuntu 19.10 (Eoan Ermine):pending (5.3.0-1008.9)
Ubuntu 20.04 (Focal Fossa):needed
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):not-affected (3.13.0-24.46~precise1)
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):not-affected (4.4.0-13.29~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (was needs-triage now end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):pending (4.15.0-1063.72)
Ubuntu 19.04 (Disco Dingo):needed
Ubuntu 19.10 (Eoan Ermine):needed
Ubuntu 20.04 (Focal Fossa):needed
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):released (5.0.0-1033.38)
Ubuntu 19.04 (Disco Dingo):needed
Ubuntu 19.10 (Eoan Ermine):needed
Ubuntu 20.04 (Focal Fossa):needed
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):pending (4.15.0-1029.32~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):pending (4.15.0-1029.32)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1009.14)
Ubuntu 19.10 (Eoan Ermine):pending (5.3.0-1007.8)
Ubuntu 20.04 (Focal Fossa):needed
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):released (5.0.0-1009.14~18.04.1)
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.2.0-1013.19)
Ubuntu 18.04 LTS (Bionic Beaver):pending (4.15.0-1050.54)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1024.25)
Ubuntu 19.10 (Eoan Ermine):pending (5.3.0-1014.16)
Ubuntu 20.04 (Focal Fossa):needed
Package
Upstream:released (5.4~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1012.12)
Ubuntu 18.04 LTS (Bionic Beaver):pending (4.15.0-1067.74)
Ubuntu 19.04 (Disco Dingo):pending (5.0.0-1028.30)
Ubuntu 19.10 (Eoan Ermine):DNE
Ubuntu 20.04 (Focal Fossa):DNE
More Information

Updated: 2020-01-07 04:14:56 UTC (commit 6e84d4e9bf6c8099acfbeb8e2b9c87c03cf9f9eb)