The Linux kernel through 5.3.13 has a start_offset+size Integer Overflow in cpia2_remap_buffer in drivers/media/usb/cpia2/cpia2_core.c because cpia2 has its own mmap implementation. This allows local users (with /dev/video0 access) to obtain read and write permissions on kernel physical pages, which can possibly result in a privilege escalation.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
CVE-2019-18675 - High Severity Vulnerability
Vulnerable Library - linux-stable-rtv4.1
Library home page: https://git.kernel.org/pub/scm/linux/kernel/git/zanussi/linux-stable-rt.git
Found in HEAD commit: d320b28538efef34097703b1fd51d4131f87b779
Found in base branch: master
Vulnerable Source Files (3)
/drivers/media/usb/cpia2/cpia2_core.c /drivers/media/usb/cpia2/cpia2_core.c /drivers/media/usb/cpia2/cpia2_core.c
Vulnerability Details
The Linux kernel through 5.3.13 has a start_offset+size Integer Overflow in cpia2_remap_buffer in drivers/media/usb/cpia2/cpia2_core.c because cpia2 has its own mmap implementation. This allows local users (with /dev/video0 access) to obtain read and write permissions on kernel physical pages, which can possibly result in a privilege escalation.
Publish Date: 2019-11-25
URL: CVE-2019-18675
CVSS 3 Score Details (7.8)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Local - Attack Complexity: Low - Privileges Required: Low - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://nvd.nist.gov/vuln/detail/CVE-2019-18675
Release Date: 2020-01-03
Fix Resolution: linux-libc-headers - 5.10;linux-yocto - 4.8.26+gitAUTOINC+1c60e003c7_27efc3ba68,5.4.20+gitAUTOINC+c11911d4d1_f4d7dbafb1
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