CVE-2018-20856

Priority
Description
An issue was discovered in the Linux kernel before 4.18.7. In
block/blk-core.c, there is an __blk_drain_queue() use-after-free because a
certain error case is mishandled.
Ubuntu-Description
It was discovered that a use-after-free error existed in the block layer
subsystem of the Linux kernel when certain failure conditions occurred. A
local attacker could possibly use this to cause a denial of service (system
crash) or possibly execute arbitrary code.
Notes
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (4.19~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):released (4.4.0-161.189)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-58.64)
Ubuntu 19.10 (Eoan Ermine):not-affected (5.0.0-13.14)
Patches:
Introduced by
7c94e1c157a227837b04f02f5edeff8301410ba2
Fixed by
54648cf1ec2d7f4b6a71767799c45676a138ca24
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):ignored (was needed ESM criteria)
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1092.103)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1047.49)
Ubuntu 19.10 (Eoan Ermine):not-affected (5.0.0-1004.4)
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1047.49~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):ignored (was needed ESM criteria)
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1055.60)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.18.0-1011.11~18.04.1)
Ubuntu 19.10 (Eoan Ermine):not-affected (5.0.0-1004.4)
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1055.60)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.18.0-1011.11~18.04.1)
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~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):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1040.42~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1040.42)
Ubuntu 19.10 (Eoan Ermine):not-affected (5.0.0-1004.4)
Package
Upstream:released (4.19~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 (4.15.0-1040.42)
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~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 (4.15.0-1040.42)
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~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):not-affected (5.0.0-1011.11~18.04.1)
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~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):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-58.64~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.18.0-13.14~18.04.1)
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-58.64~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (5.0.0-15.16~18.04.1)
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1056.63)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1042.42)
Ubuntu 19.10 (Eoan Ermine):not-affected (5.0.0-1004.4)
Package
Upstream:released (4.19~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 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~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):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~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):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~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):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):ignored (was needed ESM criteria)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~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):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~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):DNE
Ubuntu 19.10 (Eoan Ermine):DNE
Package
Upstream:released (4.19~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):released (4.15.0-1050.57)
Ubuntu 19.10 (Eoan Ermine):released (4.15.0-1050.57)
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1021.23~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1021.23)
Ubuntu 19.10 (Eoan Ermine):not-affected (5.3.0-1002.2)
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1120.129)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1043.46)
Ubuntu 19.10 (Eoan Ermine):not-affected (5.0.0-1006.6)
Package
Upstream:released (4.19~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.4.0-1124.130)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1060.66)
Ubuntu 19.10 (Eoan Ermine):DNE
More Information

Updated: 2020-03-18 22:52:11 UTC (commit 2ea7df7bd1e69e1e489978d2724a936eb3faa1b8)