Memory leak in Linux kernel - CVE-2019-19054

Vulnerability identifier: #VU23021

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-19054

CWE-ID: CWE-401

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the "cx23888_ir_probe()" function in "drivers/media/pci/cx23885/cx23888-ir.c" file. A local attacker can cause a denial of service condition (memory consumption) by triggering "kfifo_alloc()" failures.

Linux kernel
Slackware Linux
Ubuntu
Fedora
linux-image-virtual-lts-xenial (Ubuntu package)
linux-image-powerpc64-smp-lts-xenial (Ubuntu package)
linux-image-powerpc64-emb-lts-xenial (Ubuntu package)
linux-image-powerpc-smp-lts-xenial (Ubuntu package)
linux-image-powerpc-e500mc-lts-xenial (Ubuntu package)
linux-image-lowlatency-lts-xenial (Ubuntu package)
linux-image-generic-lts-xenial (Ubuntu package)
linux-image-generic-lpae-lts-xenial (Ubuntu package)
linux-image-generic (Ubuntu package)
linux-image-powerpc64-smp (Ubuntu package)
linux-image-virtual (Ubuntu package)
linux-image-powerpc64-emb (Ubuntu package)
linux-image-powerpc-smp (Ubuntu package)
linux-image-powerpc-e500mc (Ubuntu package)
linux-image-lowlatency (Ubuntu package)
linux-image-generic-lpae (Ubuntu package)
linux-image-4.4.0-190-powerpc64-emb (Ubuntu package)
linux-image-4.4.0-190-lowlatency (Ubuntu package)
linux-image-4.4.0-190-powerpc-smp (Ubuntu package)
linux-image-4.4.0-190-powerpc-e500mc (Ubuntu package)
linux-image-4.4.0-190-generic (Ubuntu package)
linux-image-4.4.0-190-generic-lpae (Ubuntu package)
linux-image-4.4.0-190-powerpc64-smp (Ubuntu package)
linux-image-aws (Ubuntu package)
linux-image-4.4.0-1078-aws (Ubuntu package)
linux-image-kvm (Ubuntu package)
linux-image-4.4.0-1080-kvm (Ubuntu package)
linux-image-4.4.0-1114-aws (Ubuntu package)
linux-image-raspi2 (Ubuntu package)
linux-image-4.4.0-1139-raspi2 (Ubuntu package)
linux-image-snapdragon (Ubuntu package)
linux-image-4.4.0-1143-snapdragon (Ubuntu package)
linux-4.4.240/kernel-generic
linux-4.4.240/kernel-huge
linux-4.4.240/kernel-modules
linux-4.4.240/kernel-headers
linux-image-oem (Ubuntu package)
linux-image-virtual-hwe-16.04 (Ubuntu package)
linux-image-lowlatency-hwe-16.04 (Ubuntu package)
linux-image-generic-lpae-hwe-16.04 (Ubuntu package)
linux-image-generic-hwe-16.04 (Ubuntu package)
linux-image-4.15.0-118-lowlatency (Ubuntu package)
linux-image-4.15.0-118-generic-lpae (Ubuntu package)
linux-image-4.15.0-118-generic (Ubuntu package)
linux-image-oracle (Ubuntu package)
linux-image-4.15.0-1054-oracle (Ubuntu package)
linux-image-oracle-lts-18.04 (Ubuntu package)
linux-image-4.15.0-1070-gke (Ubuntu package)
linux-image-gke (Ubuntu package)
linux-image-gke-4.15 (Ubuntu package)
linux-image-4.15.0-1071-raspi2 (Ubuntu package)
linux-image-4.15.0-1075-kvm (Ubuntu package)
linux-image-aws-hwe (Ubuntu package)
linux-image-aws-lts-18.04 (Ubuntu package)
linux-image-4.15.0-1083-aws (Ubuntu package)
linux-image-gcp (Ubuntu package)
linux-image-4.15.0-1084-gcp (Ubuntu package)
linux-image-gcp-lts-18.04 (Ubuntu package)
linux-image-4.15.0-1087-snapdragon (Ubuntu package)
linux-image-azure-lts-18.04 (Ubuntu package)
linux-image-azure (Ubuntu package)
linux-image-azure-edge (Ubuntu package)
linux-image-4.15.0-1096-azure (Ubuntu package)
linux-image-4.15.0-1097-oem (Ubuntu package)
kernel
linux-image-oem-osp1 (Ubuntu package)
linux-image-5.4.0-48-generic (Ubuntu package)
linux-image-5.4.0-48-generic-lpae (Ubuntu package)
linux-image-5.4.0-48-lowlatency (Ubuntu package)
linux-image-virtual-hwe-18.04 (Ubuntu package)
linux-image-snapdragon-hwe-18.04 (Ubuntu package)
linux-image-lowlatency-hwe-18.04 (Ubuntu package)
linux-image-generic-lpae-hwe-18.04 (Ubuntu package)
linux-image-generic-hwe-18.04 (Ubuntu package)
linux-image-5.4.0-1019-raspi (Ubuntu package)
linux-image-raspi-hwe-18.04 (Ubuntu package)
linux-image-raspi (Ubuntu package)
linux-image-5.4.0-1024-kvm (Ubuntu package)
linux-image-5.4.0-1025-oracle (Ubuntu package)
linux-image-5.4.0-1025-gcp (Ubuntu package)
linux-image-5.4.0-1025-aws (Ubuntu package)
linux-image-5.4.0-1026-azure (Ubuntu package)

Install update from vendor's website.

Linux kernel - update to 5.3.12
linux-image-virtual-lts-xenial (Ubuntu package) - update to 4.4.0.190.166
linux-image-powerpc64-smp-lts-xenial (Ubuntu package) - update to 4.4.0.190.166
linux-image-powerpc64-emb-lts-xenial (Ubuntu package) - update to 4.4.0.190.166
linux-image-powerpc-smp-lts-xenial (Ubuntu package) - update to 4.4.0.190.166
linux-image-powerpc-e500mc-lts-xenial (Ubuntu package) - update to 4.4.0.190.166
linux-image-lowlatency-lts-xenial (Ubuntu package) - update to 4.4.0.190.166
linux-image-generic-lts-xenial (Ubuntu package) - update to 4.4.0.190.166
linux-image-generic-lpae-lts-xenial (Ubuntu package) - update to 4.4.0.190.166
linux-image-generic (Ubuntu package) - addressed in versions 4.4.0.190.196, 4.15.0.118.105, 5.4.0.48.51
linux-image-powerpc64-smp (Ubuntu package) - update to 4.4.0.190.196
linux-image-virtual (Ubuntu package) - addressed in versions 4.4.0.190.196, 4.15.0.118.105, 5.4.0.48.51
linux-image-powerpc64-emb (Ubuntu package) - update to 4.4.0.190.196
linux-image-powerpc-smp (Ubuntu package) - update to 4.4.0.190.196
linux-image-powerpc-e500mc (Ubuntu package) - update to 4.4.0.190.196
linux-image-lowlatency (Ubuntu package) - addressed in versions 4.4.0.190.196, 4.15.0.118.105, 5.4.0.48.51
linux-image-generic-lpae (Ubuntu package) - addressed in versions 4.4.0.190.196, 4.15.0.118.105, 5.4.0.48.51
linux-image-4.4.0-190-powerpc64-emb (Ubuntu package) - addressed in versions 4.4.0-190.220, 4.4.0-190.220~14.04.1
linux-image-4.4.0-190-lowlatency (Ubuntu package) - addressed in versions 4.4.0-190.220, 4.4.0-190.220~14.04.1
linux-image-4.4.0-190-powerpc-smp (Ubuntu package) - addressed in versions 4.4.0-190.220, 4.4.0-190.220~14.04.1
linux-image-4.4.0-190-powerpc-e500mc (Ubuntu package) - addressed in versions 4.4.0-190.220, 4.4.0-190.220~14.04.1
linux-image-4.4.0-190-generic (Ubuntu package) - addressed in versions 4.4.0-190.220, 4.4.0-190.220~14.04.1
linux-image-4.4.0-190-generic-lpae (Ubuntu package) - addressed in versions 4.4.0-190.220, 4.4.0-190.220~14.04.1
linux-image-4.4.0-190-powerpc64-smp (Ubuntu package) - addressed in versions 4.4.0-190.220, 4.4.0-190.220~14.04.1
linux-image-aws (Ubuntu package) - addressed in versions 4.4.0.1078.75, 4.4.0.1114.119, 5.4.0.1025.10, 5.4.0.1025.26
linux-image-4.4.0-1078-aws (Ubuntu package) - update to 4.4.0-1078.82
linux-image-kvm (Ubuntu package) - addressed in versions 4.4.0.1080.78, 4.15.0.1075.71, 5.4.0.1024.22
linux-image-4.4.0-1080-kvm (Ubuntu package) - update to 4.4.0-1080.87
linux-image-4.4.0-1114-aws (Ubuntu package) - update to 4.4.0-1114.127
linux-image-raspi2 (Ubuntu package) - addressed in versions 4.4.0.1139.139, 4.15.0.1071.68, 5.4.0.1019.54
linux-image-4.4.0-1139-raspi2 (Ubuntu package) - update to 4.4.0-1139.148
linux-image-snapdragon (Ubuntu package) - addressed in versions 4.4.0.1143.135, 4.15.0.1087.90
linux-image-4.4.0-1143-snapdragon (Ubuntu package) - update to 4.4.0-1143.152
linux-4.4.240/kernel-generic - update to 4.4.240
linux-4.4.240/kernel-huge - update to 4.4.240
linux-4.4.240/kernel-modules - update to 4.4.240
linux-4.4.240/kernel-headers - update to 4.4.240_smp
linux-image-oem (Ubuntu package) - addressed in versions 4.15.0.118.119, 4.15.0.1097.101, 5.4.0.48.51
linux-image-virtual-hwe-16.04 (Ubuntu package) - update to 4.15.0.118.119
linux-image-lowlatency-hwe-16.04 (Ubuntu package) - update to 4.15.0.118.119
linux-image-generic-lpae-hwe-16.04 (Ubuntu package) - update to 4.15.0.118.119
linux-image-generic-hwe-16.04 (Ubuntu package) - update to 4.15.0.118.119
linux-image-4.15.0-118-lowlatency (Ubuntu package) - addressed in versions 4.15.0-118.119, 4.15.0-118.119~16.04.1
linux-image-4.15.0-118-generic-lpae (Ubuntu package) - addressed in versions 4.15.0-118.119, 4.15.0-118.119~16.04.1
linux-image-4.15.0-118-generic (Ubuntu package) - addressed in versions 4.15.0-118.119, 4.15.0-118.119~16.04.1
linux-image-oracle (Ubuntu package) - addressed in versions 4.15.0.1054.44, 5.4.0.1025.9, 5.4.0.1025.22
linux-image-4.15.0-1054-oracle (Ubuntu package) - addressed in versions 4.15.0-1054.58, 4.15.0-1054.58~16.04.1
linux-image-oracle-lts-18.04 (Ubuntu package) - update to 4.15.0.1054.64
linux-image-4.15.0-1070-gke (Ubuntu package) - update to 4.15.0-1070.73
linux-image-gke (Ubuntu package) - addressed in versions 4.15.0.1070.74, 4.15.0.1084.85, 5.4.0.1025.22
linux-image-gke-4.15 (Ubuntu package) - update to 4.15.0.1070.74
linux-image-4.15.0-1071-raspi2 (Ubuntu package) - update to 4.15.0-1071.75
linux-image-4.15.0-1075-kvm (Ubuntu package) - update to 4.15.0-1075.76
linux-image-aws-hwe (Ubuntu package) - update to 4.15.0.1083.79
linux-image-aws-lts-18.04 (Ubuntu package) - update to 4.15.0.1083.85
linux-image-4.15.0-1083-aws (Ubuntu package) - addressed in versions 4.15.0-1083.87, 4.15.0-1083.87~16.04.1
linux-image-gcp (Ubuntu package) - addressed in versions 4.15.0.1084.85, 5.4.0.1025.13, 5.4.0.1025.22
linux-image-4.15.0-1084-gcp (Ubuntu package) - addressed in versions 4.15.0-1084.95, 4.15.0-1084.95~16.04.1
linux-image-gcp-lts-18.04 (Ubuntu package) - update to 4.15.0.1084.102
linux-image-4.15.0-1087-snapdragon (Ubuntu package) - update to 4.15.0-1087.95
linux-image-azure-lts-18.04 (Ubuntu package) - update to 4.15.0.1096.69
linux-image-azure (Ubuntu package) - addressed in versions 4.15.0.1096.72, 4.15.0.1096.90, 5.4.0.1026.9, 5.4.0.1026.25
linux-image-azure-edge (Ubuntu package) - update to 4.15.0.1096.90
linux-image-4.15.0-1096-azure (Ubuntu package) - addressed in versions 4.15.0-1096.106, 4.15.0-1096.106~14.04.1, 4.15.0-1096.106~16.04.1
linux-image-4.15.0-1097-oem (Ubuntu package) - update to 4.15.0-1097.107
kernel - addressed in versions 5.3.12-200.fc30, 5.3.12-300.fc31
linux-image-oem-osp1 (Ubuntu package) - update to 5.4.0.48.51
linux-image-5.4.0-48-generic (Ubuntu package) - update to 5.4.0-48.52~18.04.1
linux-image-5.4.0-48-generic-lpae (Ubuntu package) - update to 5.4.0-48.52~18.04.1
linux-image-5.4.0-48-lowlatency (Ubuntu package) - update to 5.4.0-48.52~18.04.1
linux-image-virtual-hwe-18.04 (Ubuntu package) - update to 5.4.0.48.52~18.04.42
linux-image-snapdragon-hwe-18.04 (Ubuntu package) - update to 5.4.0.48.52~18.04.42
linux-image-lowlatency-hwe-18.04 (Ubuntu package) - update to 5.4.0.48.52~18.04.42
linux-image-generic-lpae-hwe-18.04 (Ubuntu package) - update to 5.4.0.48.52~18.04.42
linux-image-generic-hwe-18.04 (Ubuntu package) - update to 5.4.0.48.52~18.04.42
linux-image-5.4.0-1019-raspi (Ubuntu package) - update to 5.4.0-1019.21~18.04.1
linux-image-raspi-hwe-18.04 (Ubuntu package) - update to 5.4.0.1019.23
linux-image-raspi (Ubuntu package) - update to 5.4.0.1019.54
linux-image-5.4.0-1024-kvm (Ubuntu package) - update to 5.4.0-1024.24
linux-image-5.4.0-1025-oracle (Ubuntu package) - update to 5.4.0-1025.25~18.04.1
linux-image-5.4.0-1025-gcp (Ubuntu package) - update to 5.4.0-1025.25~18.04.1
linux-image-5.4.0-1025-aws (Ubuntu package) - update to 5.4.0-1025.25~18.04.1
linux-image-5.4.0-1026-azure (Ubuntu package) - update to 5.4.0-1026.26~18.04.1

• https://github.com/torvalds/linux/commit/a7b2df76b42bdd026e3106cf2ba97db41345a177
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O3PSDE6PTOTVBK2YTKB2TFQP2SUBVSNF/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PY7LJMSPAGRIKABJPDKQDTXYW3L5RX2T/

• Multiple vulnerabilities in Linux kernel
• Ubuntu update for linux
• Ubuntu update for linux
• Ubuntu update for linux
• Slackware Linux update for kernel
• Fedora 31 update for kernel
• Fedora 30 update for kernel