CVE-2019-11833
Vulnerability Summary
Timeline
Description
fs/ext4/extents.c in the Linux kernel through 5.1.2 does not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem.
CVSS Metrics
- v4.0•MEDIUM•Score: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:P/I:N/A:N
EPSS Trends
Current EPSS score: 0.65%• Percentile: 49%
Techniques & Countermeasures
- CWE-908•Use of Uninitialized Resource
The product uses or accesses a resource that has not been initialized.
Affected Systems
- canonical•ubuntu_linux
14.04 | 16.04 | 18.04 | 19.04
- debian•linux
< 4.19.37-4 | < 4.19.37-4 | < 4.19.37-4 | < 4.19.37-4
- ubuntu•linux
all | < 4.4.0-157.185 | < 4.15.0-55.60
- ubuntu•linux-aws
< 4.4.0-1054.58 | < 4.4.0-1090.101 | < 4.15.0-1047.49
- ubuntu•linux-aws-fips
< 4.15.0-2018.18 | all
- ubuntu•linux-aws-hwe
< 4.15.0-1047.49~16.04.1
- ubuntu•linux-azure
< 4.15.0-1059.64~14.04.1 | < 4.15.0-1051.56 | < 4.18.0-1025.27~18.04.1
- ubuntu•linux-azure-fde
all
- ubuntu•linux-azure-fips
< 4.15.0-2006.7 | all
- ubuntu•linux-bluefield
all
- ubuntu•linux-fips
< 4.4.0-1015.20
- ubuntu•linux-gcp
< 4.15.0-1037.39~16.04.1 | < 4.15.0-1037.39
- ubuntu•linux-gcp-fips
all
- ubuntu•linux-gke
all
- ubuntu•linux-gke-4.15
< 4.15.0-1037.39
- ubuntu•linux-hwe
< 4.15.0-55.60~16.04.2 | < 5.0.0-23.24~18.04.1
- ubuntu•linux-hwe-edge
all
- ubuntu•linux-intel-iot-realtime
all
- ubuntu•linux-kvm
< 4.4.0-1052.59 | < 4.15.0-1039.39
- ubuntu•linux-lts-xenial
< 4.4.0-164.192~14.04.1
- ubuntu•linux-oem
< 4.15.0-1050.57
- ubuntu•linux-oem-osp1
< 5.0.0-1015.16
- ubuntu•linux-oracle
< 4.15.0-1018.20~16.04.1 | < 4.15.0-1018.20
- ubuntu•linux-raspi-realtime
all
- ubuntu•linux-raspi2
< 4.4.0-1117.126 | < 4.15.0-1041.44
- ubuntu•linux-realtime
all
- ubuntu•linux-riscv
all | all
- ubuntu•linux-snapdragon
< 4.4.0-1121.127 | < 4.15.0-1058.64
- debian•debian_linux
8.0 | 9.0
- fedoraproject•fedora
29
- linux•linux_kernel
≤ 5.1.2
- redhat•enterprise_linux
8.0
- redhat•enterprise_linux_desktop
7.0
- redhat•enterprise_linux_eus
8.1 | 8.2 | 8.4 | 8.6
- redhat•enterprise_linux_for_real_time
7 | 8.0
- redhat•enterprise_linux_for_real_time_for_nfv
7 | 8.0
- redhat•enterprise_linux_for_real_time_for_nfv_tus
8.2 | 8.4 | 8.6
- redhat•enterprise_linux_for_real_time_tus
8.2 | 8.4 | 8.6
- redhat•enterprise_linux_server
7.0
- redhat•enterprise_linux_server_aus
8.2 | 8.4 | 8.6
- redhat•enterprise_linux_server_tus
8.2 | 8.4 | 8.6
- redhat•enterprise_linux_workstation
7.0
References (33)
- https://github.com/torvalds/linux/commit/592acbf16821288ecdc4192c47e3774a4c48bb64
- http://www.securityfocus.com/bid/108372
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GJGZIMGB72TL7OGWRMHIL43WHXFQWU4X/
- https://www.debian.org/security/2019/dsa-4465
- https://lists.debian.org/debian-lts-announce/2019/06/msg00010.html
- https://lists.debian.org/debian-lts-announce/2019/06/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
- https://seclists.org/bugtraq/2019/Jun/26
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
- https://usn.ubuntu.com/4068-1/
- https://usn.ubuntu.com/4068-2/
- https://usn.ubuntu.com/4069-1/
- https://usn.ubuntu.com/4076-1/
- https://usn.ubuntu.com/4069-2/
- https://access.redhat.com/errata/RHSA-2019:2043
- https://access.redhat.com/errata/RHSA-2019:2029
- https://usn.ubuntu.com/4095-2/
- https://usn.ubuntu.com/4118-1/
- http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://ubuntu.com/security/CVE-2019-11833
- https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=592acbf16821288ecdc4192c47e3774a4c48bb64
- https://ubuntu.com/security/notices/USN-4068-1
- https://ubuntu.com/security/notices/USN-4068-2
- https://ubuntu.com/security/notices/USN-4069-1
- https://ubuntu.com/security/notices/USN-4076-1
- https://ubuntu.com/security/notices/USN-4069-2
- https://ubuntu.com/security/notices/USN-4095-2
- https://ubuntu.com/security/notices/USN-4118-1
- https://www.cve.org/CVERecord?id=CVE-2019-11833
- https://security-tracker.debian.org/tracker/CVE-2019-11833