CVE-2018-9517
Vulnerability Summary
Timeline
Description
In pppol2tp_connect, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-38159931.
CVSS Metrics
- v3.0•MEDIUM•Score: 6.7CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C
EPSS Trends
Current EPSS score: 0.44%• Percentile: 38%
Techniques & Countermeasures
- CWE-416•Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Affected Systems
- debian•linux
< 4.14.2-1 | < 4.14.2-1 | < 4.14.2-1 | < 4.14.2-1
- ubuntu•linux
all | < 4.4.0-145.171
- ubuntu•linux-aws
< 4.4.0-1040.43 | < 4.4.0-1079.89
- ubuntu•linux-azure
< 4.15.0-1013.13~16.04.2
- ubuntu•linux-azure-6.11
all
- ubuntu•linux-azure-fde
all
- ubuntu•linux-fips
< 4.4.0-1008.10
- ubuntu•linux-gcp
< 4.15.0-1014.14~16.04.1
- ubuntu•linux-gcp-6.11
all
- ubuntu•linux-gke
all
- ubuntu•linux-hwe
< 4.15.0-24.26~16.04.1
- ubuntu•linux-hwe-6.11
all
- ubuntu•linux-intel-iot-realtime
all
- ubuntu•linux-kvm
< 4.4.0-1043.49
- ubuntu•linux-lowlatency-hwe-6.11
all
- ubuntu•linux-lts-xenial
< 4.4.0-144.170~14.04.1
- ubuntu•linux-raspi-realtime
all
- ubuntu•linux-raspi2
< 4.4.0-1106.114 | all
- ubuntu•linux-realtime
all
- ubuntu•linux-riscv
all | all
- ubuntu•linux-snapdragon
< 4.4.0-1110.115 | < 4.15.0-1053.57
- google inc.•android
Android Kernel
- google•android
na
References (11)
- https://source.android.com/security/bulletin/pixel/2018-09-01
- https://usn.ubuntu.com/3932-1/
- https://usn.ubuntu.com/3932-2/
- https://access.redhat.com/errata/RHSA-2019:2043
- https://access.redhat.com/errata/RHSA-2019:2029
- https://ubuntu.com/security/CVE-2018-9517
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f026bc29a8e093edfbb2a77700454b285c97e8ad
- https://ubuntu.com/security/notices/USN-3932-1
- https://ubuntu.com/security/notices/USN-3932-2
- https://www.cve.org/CVERecord?id=CVE-2018-9517
- https://security-tracker.debian.org/tracker/CVE-2018-9517