CVE-2019-18675
Last modified
CVE-2019-18675 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.53% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 3.16.60 |
| Linux | Linux Kernel | >= 3.17, < 3.18.113 |
| Linux | Linux Kernel | >= 3.19, < 4.4.137 |
| Linux | Linux Kernel | >= 4.5, < 4.9.108 |
| Linux | Linux Kernel | >= 4.10, < 4.14.49 |
| Linux | Linux Kernel | >= 4.15, < 4.16.15 |
References
- https://deshal3v.github.io/blog/kernel-research/mmap_exploitationExploit, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory
- https://deshal3v.github.io/blog/kernel-research/mmap_exploitationExploit, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200103-0001/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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