PublicDateAtUSN: 2020-05-04 12:15:00 UTC
Candidate: CVE-2020-12114
PublicDate: 2020-05-04 12:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12114
 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4edbe133f851c9e3a2f2a1db367e826b01e72594
 https://www.openwall.com/lists/oss-security/2020/05/04/2
 https://ubuntu.com/security/notices/USN-4391-1
 https://ubuntu.com/security/notices/USN-4392-1
 https://ubuntu.com/security/notices/USN-4387-1
 https://ubuntu.com/security/notices/USN-4389-1
 https://ubuntu.com/security/notices/USN-4390-1
 https://ubuntu.com/security/notices/USN-4388-1
Description:
 A pivot_root race condition in fs/namespace.c in the Linux kernel 4.4.x
 before 4.4.221, 4.9.x before 4.9.221, 4.14.x before 4.14.178, 4.19.x before
 4.19.119, and 5.x before 5.3 allows local users to cause a denial of
 service (panic) by corrupting a mountpoint reference counter.
Ubuntu-Description:
 Piotr Krysiuk discovered that race conditions existed in the file system
 implementation in the Linux kernel. A local attacker could use this to
 cause a denial of service (system crash).
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by: Piotr Krysiuk
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H [4.7 MEDIUM]

Patches_linux:
 break-fix: 84d17192d2afd52aeba88c71ae4959a015f56a38 4edbe133f851c9e3a2f2a1db367e826b01e72594|local-2020-12114-fix
 break-fix: 84d17192d2afd52aeba88c71ae4959a015f56a38 b0d3869ce9eeacbb1bbd541909beeef4126426d5
upstream_linux: released (5.7~rc4)
precise/esm_linux: ignored (was needs-triage ESM criteria)
trusty_linux: ignored (out of standard support)
trusty/esm_linux: released (3.13.0-180.231)
xenial_linux: released (4.4.0-184.214)
esm-infra/xenial_linux: released (4.4.0-184.214)
bionic_linux: released (4.15.0-106.107)
eoan_linux: released (5.3.0-59.53)
focal_linux: released (5.4.0-37.41)
devel_linux: not-affected (5.4.0-42.46)

Patches_linux-hwe:
upstream_linux-hwe: released (5.7~rc4)
precise/esm_linux-hwe: DNE
trusty_linux-hwe: DNE
trusty/esm_linux-hwe: DNE
xenial_linux-hwe: released (4.15.0-106.107~16.04.1)
esm-infra/xenial_linux-hwe: released (4.15.0-106.107~16.04.1)
bionic_linux-hwe: released (5.3.0-59.53~18.04.1)
eoan_linux-hwe: DNE
focal_linux-hwe: DNE
devel_linux-hwe: DNE

Patches_linux-hwe-edge:
upstream_linux-hwe-edge: released (5.7~rc4)
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)
eoan_linux-hwe-edge: DNE
focal_linux-hwe-edge: DNE
devel_linux-hwe-edge: DNE

Patches_linux-lts-xenial:
upstream_linux-lts-xenial: released (5.7~rc4)
precise/esm_linux-lts-xenial: DNE
trusty_linux-lts-xenial: ignored (out of standard support)
trusty/esm_linux-lts-xenial: released (4.4.0-184.214~14.04.1)
xenial_linux-lts-xenial: DNE
bionic_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 (5.7~rc4)
precise/esm_linux-lts-trusty: released (3.13.0-180.231~12.04.1)
trusty_linux-lts-trusty: DNE
trusty/esm_linux-lts-trusty: DNE
xenial_linux-lts-trusty: DNE
bionic_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 (5.7~rc4)
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 (4.15.0-1087.97)
eoan_linux-oem: ignored (reached end-of-life)
focal_linux-oem: DNE
devel_linux-oem: DNE

Patches_linux-oem-osp1:
upstream_linux-oem-osp1: released (5.7~rc4)
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 (5.0.0-1059.64)
eoan_linux-oem-osp1: ignored (reached end-of-life)
focal_linux-oem-osp1: DNE
devel_linux-oem-osp1: DNE

Patches_linux-kvm:
upstream_linux-kvm: released (5.7~rc4)
precise/esm_linux-kvm: DNE
trusty_linux-kvm: DNE
trusty/esm_linux-kvm: DNE
xenial_linux-kvm: released (4.4.0-1075.82)
esm-infra/xenial_linux-kvm: released (4.4.0-1075.82)
bionic_linux-kvm: released (4.15.0-1067.68)
eoan_linux-kvm: released (5.3.0-1023.25)
focal_linux-kvm: released (5.4.0-1015.15)
devel_linux-kvm: not-affected (5.4.0-1015.15)

Patches_linux-aws:
upstream_linux-aws: released (5.7~rc4)
precise/esm_linux-aws: DNE
trusty_linux-aws: ignored (out of standard support)
trusty/esm_linux-aws: released (4.4.0-1073.77)
xenial_linux-aws: released (4.4.0-1109.120)
esm-infra/xenial_linux-aws: released (4.4.0-1109.120)
bionic_linux-aws: released (4.15.0-1073.77)
eoan_linux-aws: released (5.3.0-1023.25)
focal_linux-aws: released (5.4.0-1015.15)
devel_linux-aws: not-affected (5.4.0-1020.20)

Patches_linux-aws-5.0:
upstream_linux-aws-5.0: released (5.7~rc4)
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: ignored (was needs-triage now end-of-life)
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 (5.7~rc4)
precise/esm_linux-aws-hwe: DNE
trusty_linux-aws-hwe: DNE
trusty/esm_linux-aws-hwe: DNE
xenial_linux-aws-hwe: released (4.15.0-1073.77~16.04.1)
esm-infra/xenial_linux-aws-hwe: released (4.15.0-1073.77~16.04.1)
bionic_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 (5.7~rc4)
precise/esm_linux-azure: DNE
trusty_linux-azure: ignored (out of standard support)
trusty/esm_linux-azure: released (4.15.0-1089.99~14.04.1)
xenial_linux-azure: released (4.15.0-1089.99~16.04.1)
esm-infra/xenial_linux-azure: released (4.15.0-1089.99~16.04.1)
bionic_linux-azure: ignored (was needs-triage now end-of-life)
eoan_linux-azure: released (5.3.0-1028.29)
focal_linux-azure: released (5.4.0-1016.16)
devel_linux-azure: not-affected (5.4.0-1022.22)

Patches_linux-azure-5.3:
upstream_linux-azure-5.3: released (5.7~rc4)
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 (5.3.0-1028.29~18.04.1)
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 (5.7~rc4)
precise/esm_linux-azure-edge: DNE
trusty_linux-azure-edge: DNE
trusty/esm_linux-azure-edge: DNE
xenial_linux-azure-edge: DNE
bionic_linux-azure-edge: ignored (was needs-triage now end-of-life)
eoan_linux-azure-edge: DNE
focal_linux-azure-edge: DNE
devel_linux-azure-edge: DNE

Patches_linux-gcp:
upstream_linux-gcp: released (5.7~rc4)
precise/esm_linux-gcp: DNE
trusty_linux-gcp: DNE
trusty/esm_linux-gcp: DNE
xenial_linux-gcp: released (4.15.0-1077.87~16.04.1)
esm-infra/xenial_linux-gcp: released (4.15.0-1077.87~16.04.1)
bionic_linux-gcp: ignored (was needs-triage now end-of-life)
eoan_linux-gcp: released (5.3.0-1026.28)
focal_linux-gcp: released (5.4.0-1015.15)
devel_linux-gcp: not-affected (5.4.0-1021.21)

Patches_linux-gcp-5.3:
upstream_linux-gcp-5.3: released (5.7~rc4)
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 (5.3.0-1026.28~18.04.1)
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 (5.7~rc4)
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)
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 (5.7~rc4)
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 (4.15.0-1063.66)
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 (5.7~rc4)
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 (5.0.0-1042.43)
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 (5.7~rc4)
precise/esm_linux-oracle: DNE
trusty_linux-oracle: DNE
trusty/esm_linux-oracle: DNE
xenial_linux-oracle: released (4.15.0-1045.49~16.04.1)
esm-infra/xenial_linux-oracle: released (4.15.0-1045.49~16.04.1)
bionic_linux-oracle: released (4.15.0-1045.49)
eoan_linux-oracle: released (5.3.0-1024.26)
focal_linux-oracle: released (5.4.0-1015.15)
devel_linux-oracle: not-affected (5.4.0-1021.21)

Patches_linux-oracle-5.0:
upstream_linux-oracle-5.0: released (5.7~rc4)
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: ignored (was needs-triage now end-of-life)
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 (5.7~rc4)
precise/esm_linux-raspi2: DNE
trusty_linux-raspi2: DNE
trusty/esm_linux-raspi2: DNE
xenial_linux-raspi2: released (4.4.0-1134.143)
bionic_linux-raspi2: released (4.15.0-1063.67)
eoan_linux-raspi2: released (5.3.0-1027.29)
focal_linux-raspi2: ignored (was needs-triage now end-of-life)
devel_linux-raspi2: DNE

Patches_linux-snapdragon:
upstream_linux-snapdragon: released (5.7~rc4)
precise/esm_linux-snapdragon: DNE
trusty_linux-snapdragon: DNE
trusty/esm_linux-snapdragon: DNE
xenial_linux-snapdragon: released (4.4.0-1138.146)
bionic_linux-snapdragon: released (4.15.0-1080.87)
eoan_linux-snapdragon: DNE
focal_linux-snapdragon: DNE
devel_linux-snapdragon: DNE

Patches_linux-raspi2-5.3:
upstream_linux-raspi2-5.3: released (5.7~rc4)
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: released (5.3.0-1027.29~18.04.1)
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 (5.7~rc4)
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: released (5.6.0-1011.11)
devel_linux-oem-5.6: not-affected (5.6.0-1020.20)

Patches_linux-gke-5.3:
upstream_linux-gke-5.3: released (5.7~rc4)
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: released (5.3.0-1026.28~18.04.1)
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 (5.7~rc4)
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: released (5.3.0-1024.26~18.04.1)
eoan_linux-oracle-5.3: DNE
focal_linux-oracle-5.3: DNE
devel_linux-oracle-5.3: DNE

Patches_linux-riscv:
upstream_linux-riscv: released (5.7~rc4)
precise/esm_linux-riscv: DNE
trusty_linux-riscv: DNE
trusty/esm_linux-riscv: DNE
xenial_linux-riscv: DNE
bionic_linux-riscv: DNE
eoan_linux-riscv: DNE
focal_linux-riscv: released (5.4.0-27.31)
devel_linux-riscv: not-affected (5.4.0-27.31)

Patches_linux-raspi:
upstream_linux-raspi: released (5.7~rc4)
precise/esm_linux-raspi: DNE
trusty_linux-raspi: DNE
trusty/esm_linux-raspi: DNE
xenial_linux-raspi: DNE
bionic_linux-raspi: DNE
eoan_linux-raspi: DNE
focal_linux-raspi: released (5.4.0-1012.12)
devel_linux-raspi: not-affected (5.4.0-1012.12)

Patches_linux-azure-4.15:
upstream_linux-azure-4.15: released (5.7~rc4)
precise/esm_linux-azure-4.15: DNE
trusty_linux-azure-4.15: DNE
trusty/esm_linux-azure-4.15: DNE
xenial_linux-azure-4.15: DNE
bionic_linux-azure-4.15: released (4.15.0-1089.99)
eoan_linux-azure-4.15: DNE
focal_linux-azure-4.15: DNE
devel_linux-azure-4.15: DNE

Patches_linux-aws-5.3:
upstream_linux-aws-5.3: released (5.7~rc4)
precise/esm_linux-aws-5.3: DNE
trusty_linux-aws-5.3: DNE
trusty/esm_linux-aws-5.3: DNE
xenial_linux-aws-5.3: DNE
bionic_linux-aws-5.3: released (5.3.0-1023.25~18.04.1)
eoan_linux-aws-5.3: DNE
focal_linux-aws-5.3: DNE
devel_linux-aws-5.3: DNE

Patches_linux-gcp-4.15:
upstream_linux-gcp-4.15: released (5.7~rc4)
precise/esm_linux-gcp-4.15: DNE
trusty_linux-gcp-4.15: DNE
trusty/esm_linux-gcp-4.15: DNE
xenial_linux-gcp-4.15: DNE
bionic_linux-gcp-4.15: released (4.15.0-1077.87)
eoan_linux-gcp-4.15: DNE
focal_linux-gcp-4.15: DNE
devel_linux-gcp-4.15: DNE

Patches_linux-hwe-5.4:
upstream_linux-hwe-5.4: released (5.7~rc4)
precise/esm_linux-hwe-5.4: DNE
trusty_linux-hwe-5.4: DNE
trusty/esm_linux-hwe-5.4: DNE
xenial_linux-hwe-5.4: DNE
bionic_linux-hwe-5.4: not-affected (5.4.0-37.41~18.04.1)
focal_linux-hwe-5.4: DNE
devel_linux-hwe-5.4: DNE

Patches_linux-raspi-5.4:
upstream_linux-raspi-5.4: released (5.7~rc4)
precise/esm_linux-raspi-5.4: DNE
trusty_linux-raspi-5.4: DNE
trusty/esm_linux-raspi-5.4: DNE
xenial_linux-raspi-5.4: DNE
bionic_linux-raspi-5.4: not-affected (5.4.0-1013.13~18.04.1)
focal_linux-raspi-5.4: DNE
devel_linux-raspi-5.4: DNE

Patches_linux-azure-5.4:
upstream_linux-azure-5.4: released (5.7~rc4)
precise/esm_linux-azure-5.4: DNE
trusty_linux-azure-5.4: DNE
trusty/esm_linux-azure-5.4: DNE
xenial_linux-azure-5.4: DNE
bionic_linux-azure-5.4: not-affected (5.4.0-1020.20~18.04.1)
focal_linux-azure-5.4: DNE
devel_linux-azure-5.4: DNE

Patches_linux-oracle-5.4:
upstream_linux-oracle-5.4: released (5.7~rc4)
precise/esm_linux-oracle-5.4: DNE
trusty_linux-oracle-5.4: DNE
trusty/esm_linux-oracle-5.4: DNE
xenial_linux-oracle-5.4: DNE
bionic_linux-oracle-5.4: not-affected (5.4.0-1019.19~18.04.1)
focal_linux-oracle-5.4: DNE
devel_linux-oracle-5.4: DNE

Patches_linux-gcp-5.4:
upstream_linux-gcp-5.4: released (5.7~rc4)
precise/esm_linux-gcp-5.4: DNE
trusty_linux-gcp-5.4: DNE
trusty/esm_linux-gcp-5.4: DNE
xenial_linux-gcp-5.4: DNE
bionic_linux-gcp-5.4: not-affected (5.4.0-1019.19~18.04.2)
focal_linux-gcp-5.4: DNE
devel_linux-gcp-5.4: DNE

Patches_linux-aws-5.4:
upstream_linux-aws-5.4: released (5.7~rc4)
precise/esm_linux-aws-5.4: DNE
trusty_linux-aws-5.4: DNE
trusty/esm_linux-aws-5.4: DNE
xenial_linux-aws-5.4: DNE
bionic_linux-aws-5.4: not-affected (5.4.0-1018.18~18.04.1)
focal_linux-aws-5.4: DNE
devel_linux-aws-5.4: DNE