PublicDateAtUSN: 2019-12-15 23:15:00 UTC
Candidate: CVE-2019-19807
PublicDate: 2019-12-15 23:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19807
 https://git.kernel.org/linus/e7af6307a8a54f0b873960b32b6a644f2d0fbd97
 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.11
 https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e7af6307a8a54f0b873960b32b6a644f2d0fbd97
 https://github.com/torvalds/linux/commit/e7af6307a8a54f0b873960b32b6a644f2d0fbd97
 https://ubuntu.com/security/notices/USN-4225-1
 https://ubuntu.com/security/notices/USN-4227-1
 https://ubuntu.com/security/notices/USN-4227-2
Description:
 In the Linux kernel before 5.3.11, sound/core/timer.c has a use-after-free
 caused by erroneous code refactoring, aka CID-e7af6307a8a5. This is related
 to snd_timer_open and snd_timer_close_locked. The timeri variable was
 originally intended to be for a newly created timer instance, but was used
 for a different purpose after refactoring.
Ubuntu-Description:
 Tristan Madani discovered that the ALSA timer implementation in the Linux
 kernel contained a use-after-free vulnerability. A local attacker could use
 this to cause a denial of service (system crash) or possibly execute
 arbitrary code.
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by: Tristan Madani
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H [7.8 HIGH]

Patches_linux:
 break-fix: 41672c0c24a62699d20aab53b98d843b16483053 e7af6307a8a54f0b873960b32b6a644f2d0fbd97
upstream_linux: released (5.4~rc7)
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 (4.15.0-74.84)
disco_linux: not-affected (4.18.0-10.11)
eoan_linux: released (5.3.0-26.28)
devel_linux: not-affected (5.4.0-9.12)

Patches_linux-hwe:
upstream_linux-hwe: released (5.4~rc7)
precise/esm_linux-hwe: DNE
trusty_linux-hwe: DNE
trusty/esm_linux-hwe: DNE
xenial_linux-hwe: released (4.15.0-74.83~16.04.1)
esm-infra/xenial_linux-hwe: released (4.15.0-74.83~16.04.1)
bionic_linux-hwe: not-affected (4.18.0-13.14~18.04.1)
disco_linux-hwe: DNE
eoan_linux-hwe: DNE
devel_linux-hwe: DNE

Patches_linux-hwe-edge:
upstream_linux-hwe-edge: released (5.4~rc7)
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
devel_linux-hwe-edge: DNE

Patches_linux-lts-xenial:
upstream_linux-lts-xenial: released (5.4~rc7)
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
devel_linux-lts-xenial: DNE

Patches_linux-lts-trusty:
upstream_linux-lts-trusty: released (5.4~rc7)
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
devel_linux-lts-trusty: DNE

Patches_linux-oem:
upstream_linux-oem: released (5.4~rc7)
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 (4.15.0-1066.76)
disco_linux-oem: ignored (was pending \[4.15.0-1066.76\] now end-of-life)
eoan_linux-oem: released (4.15.0-1066.76)
devel_linux-oem: DNE

Patches_linux-oem-osp1:
upstream_linux-oem-osp1: released (5.4~rc7)
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: not-affected (5.0.0-1010.11)
disco_linux-oem-osp1: not-affected (5.0.0-1010.11)
eoan_linux-oem-osp1: not-affected (5.0.0-1010.11)
devel_linux-oem-osp1: DNE

Patches_linux-kvm:
upstream_linux-kvm: released (5.4~rc7)
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 (4.15.0-1052.52)
disco_linux-kvm: not-affected (4.18.0-1003.3)
eoan_linux-kvm: released (5.3.0-1009.10)
devel_linux-kvm: not-affected (5.4.0-1004.4)

Patches_linux-aws:
upstream_linux-aws: released (5.4~rc7)
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 (4.15.0-1057.59)
disco_linux-aws: not-affected (4.18.0-1002.3)
eoan_linux-aws: released (5.3.0-1009.10)
devel_linux-aws: not-affected (5.4.0-1005.5)

Patches_linux-aws-5.0:
upstream_linux-aws-5.0: released (5.4~rc7)
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: not-affected (5.0.0-1021.24~18.04.1)
disco_linux-aws-5.0: DNE
eoan_linux-aws-5.0: DNE
devel_linux-aws-5.0: DNE

Patches_linux-aws-hwe:
upstream_linux-aws-hwe: released (5.4~rc7)
precise/esm_linux-aws-hwe: DNE
trusty_linux-aws-hwe: DNE
trusty/esm_linux-aws-hwe: DNE
xenial_linux-aws-hwe: released (4.15.0-1057.59~16.04.1)
esm-infra/xenial_linux-aws-hwe: released (4.15.0-1057.59~16.04.1)
bionic_linux-aws-hwe: DNE
disco_linux-aws-hwe: DNE
eoan_linux-aws-hwe: DNE
devel_linux-aws-hwe: DNE

Patches_linux-azure:
upstream_linux-azure: released (5.4~rc7)
precise/esm_linux-azure: DNE
trusty_linux-azure: ignored (out of standard support)
trusty/esm_linux-azure: released (4.15.0-1066.71~14.04.1)
xenial_linux-azure: released (4.15.0-1066.71)
esm-infra/xenial_linux-azure: released (4.15.0-1066.71)
bionic_linux-azure: not-affected (4.15.0-1002.2)
disco_linux-azure: not-affected (4.18.0-1003.3)
eoan_linux-azure: released (5.3.0-1009.10)
devel_linux-azure: not-affected (5.4.0-1006.6)

Patches_linux-azure-5.3:
upstream_linux-azure-5.3: released (5.4~rc7)
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 (5.3.0-1009.10~18.04.1)
disco_linux-azure-5.3: DNE
eoan_linux-azure-5.3: DNE
devel_linux-azure-5.3: DNE

Patches_linux-azure-edge:
upstream_linux-azure-edge: released (5.4~rc7)
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
devel_linux-azure-edge: DNE

Patches_linux-gcp:
upstream_linux-gcp: released (5.4~rc7)
precise/esm_linux-gcp: DNE
trusty_linux-gcp: DNE
trusty/esm_linux-gcp: DNE
xenial_linux-gcp: released (4.15.0-1052.56)
esm-infra/xenial_linux-gcp: released (4.15.0-1052.56)
bionic_linux-gcp: not-affected (4.15.0-1001.1)
disco_linux-gcp: not-affected (4.18.0-1002.3)
eoan_linux-gcp: released (5.3.0-1011.12)
devel_linux-gcp: not-affected (5.4.0-1005.5)

Patches_linux-gcp-5.3:
upstream_linux-gcp-5.3: released (5.4~rc7)
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 (5.3.0-1010.11~18.04.1)
disco_linux-gcp-5.3: DNE
eoan_linux-gcp-5.3: DNE
devel_linux-gcp-5.3: DNE

Patches_linux-gcp-edge:
upstream_linux-gcp-edge: released (5.4~rc7)
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
devel_linux-gcp-edge: DNE

Patches_linux-gke-4.15:
upstream_linux-gke-4.15: released (5.4~rc7)
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 (4.15.0-1050.53)
disco_linux-gke-4.15: DNE
eoan_linux-gke-4.15: DNE
devel_linux-gke-4.15: DNE

Patches_linux-gke-5.0:
upstream_linux-gke-5.0: released (5.4~rc7)
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: not-affected (5.0.0-1011.11~18.04.1)
disco_linux-gke-5.0: DNE
eoan_linux-gke-5.0: DNE
devel_linux-gke-5.0: DNE

Patches_linux-oracle:
upstream_linux-oracle: released (5.4~rc7)
precise/esm_linux-oracle: DNE
trusty_linux-oracle: DNE
trusty/esm_linux-oracle: DNE
xenial_linux-oracle: released (4.15.0-1031.34~16.04.1)
esm-infra/xenial_linux-oracle: released (4.15.0-1031.34~16.04.1)
bionic_linux-oracle: released (4.15.0-1031.34)
disco_linux-oracle: not-affected (4.15.0-1007.9)
eoan_linux-oracle: released (5.3.0-1008.9)
devel_linux-oracle: not-affected (5.4.0-1005.5)

Patches_linux-oracle-5.0:
upstream_linux-oracle-5.0: released (5.4~rc7)
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: not-affected (5.0.0-1007.12~18.04.1)
disco_linux-oracle-5.0: DNE
eoan_linux-oracle-5.0: DNE
devel_linux-oracle-5.0: DNE

Patches_linux-raspi2:
upstream_linux-raspi2: released (5.4~rc7)
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 (4.15.0-1053.57)
disco_linux-raspi2: not-affected (4.18.0-1005.7)
eoan_linux-raspi2: released (5.3.0-1015.17)
devel_linux-raspi2: ignored (was needed now end-of-life)

Patches_linux-snapdragon:
upstream_linux-snapdragon: released (5.4~rc7)
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 (4.15.0-1070.77)
disco_linux-snapdragon: not-affected (5.0.0-1010.10)
eoan_linux-snapdragon: DNE
devel_linux-snapdragon: DNE

Patches_linux-raspi2-5.3:
upstream_linux-raspi2-5.3: released (5.4~rc7)
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
devel_linux-raspi2-5.3: DNE

Patches_linux-oem-5.4:
upstream_linux-oem-5.4: released (5.4~rc7)
precise/esm_linux-oem-5.4: DNE
trusty_linux-oem-5.4: DNE
trusty/esm_linux-oem-5.4: DNE
xenial_linux-oem-5.4: DNE
bionic_linux-oem-5.4: DNE
eoan_linux-oem-5.4: DNE
devel_linux-oem-5.4: not-affected (5.4.0-1002.4)

Patches_linux-gke-5.3:
upstream_linux-gke-5.3: released (5.4~rc7)
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
devel_linux-gke-5.3: DNE