CVE-2017-18203
Vulnerability Summary
Timeline
Description
The dm_get_from_kobject function in drivers/md/dm.c in the Linux kernel before 4.14.3 allow local users to cause a denial of service (BUG) by leveraging a race condition with __dm_destroy during creation and removal of DM devices.
CVSS Metrics
- v3.0•MEDIUM•Score: 4.7CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- v2.0•LOW•Score: 1.9AV:L/AC:M/Au:N/C:N/I:N/A:P
EPSS Trends
Current EPSS score: 0.32%• Percentile: 25%
Techniques & Countermeasures
- CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
Affected Systems
- debian•linux
< 4.14.7-1 | < 4.14.7-1 | < 4.14.7-1 | < 4.14.7-1
- ubuntu•linux
< 3.13.0-149.199 | < 4.4.0-119.143
- ubuntu•linux-aws
< 4.4.0-1016.16 | < 4.4.0-1054.63
- ubuntu•linux-azure
< 4.13.0-1018.21
- ubuntu•linux-azure-6.11
all
- ubuntu•linux-azure-fde
all
- ubuntu•linux-azure-fde-5.15
all
- ubuntu•linux-fips
< 4.4.0-1008.10
- ubuntu•linux-gcp
< 4.13.0-1017.21
- ubuntu•linux-gcp-6.11
all
- ubuntu•linux-gke
all
- ubuntu•linux-hwe
< 4.13.0-43.48~16.04.1
- ubuntu•linux-hwe-6.11
all
- ubuntu•linux-intel-iot-realtime
all
- ubuntu•linux-kvm
< 4.4.0-1020.25
- ubuntu•linux-lowlatency-hwe-6.11
all
- ubuntu•linux-lts-xenial
< 4.4.0-119.143~14.04.1
- ubuntu•linux-oem
< 4.13.0-1028.31
- ubuntu•linux-raspi-realtime
all
- ubuntu•linux-raspi2
< 4.4.0-1086.94 | all
- ubuntu•linux-realtime
all
- ubuntu•linux-riscv
all | all
- ubuntu•linux-snapdragon
< 4.4.0-1088.93
- linux•linux_kernel
< 4.14.3
References (27)
- https://www.debian.org/security/2018/dsa-4187
- https://usn.ubuntu.com/3619-2/
- http://www.securityfocus.com/bid/103184
- https://github.com/torvalds/linux/commit/b9a41d21dceadf8104812626ef85dc56ee8a60ed
- https://access.redhat.com/errata/RHSA-2018:1854
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.3
- https://access.redhat.com/errata/RHSA-2018:1062
- https://access.redhat.com/errata/RHSA-2018:0676
- https://usn.ubuntu.com/3653-2/
- https://usn.ubuntu.com/3655-1/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b9a41d21dceadf8104812626ef85dc56ee8a60ed
- https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html
- https://usn.ubuntu.com/3655-2/
- https://usn.ubuntu.com/3653-1/
- https://usn.ubuntu.com/3657-1/
- https://usn.ubuntu.com/3619-1/
- https://access.redhat.com/errata/RHSA-2019:4154
- https://ubuntu.com/security/CVE-2017-18203
- https://ubuntu.com/security/notices/USN-3619-1
- https://ubuntu.com/security/notices/USN-3619-2
- https://ubuntu.com/security/notices/USN-3653-1
- https://ubuntu.com/security/notices/USN-3653-2
- https://ubuntu.com/security/notices/USN-3655-1
- https://ubuntu.com/security/notices/USN-3655-2
- https://ubuntu.com/security/notices/USN-3657-1
- https://www.cve.org/CVERecord?id=CVE-2017-18203
- https://security-tracker.debian.org/tracker/CVE-2017-18203