7.8

CVE-2019-18675

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 3.16.60
Linux ≫ Linux Kernel Version >= 3.17 < 3.18.113
Linux ≫ Linux Kernel Version >= 3.19 < 4.4.137
Linux ≫ Linux Kernel Version >= 4.5 < 4.9.108
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.49
Linux ≫ Linux Kernel Version >= 4.15 < 4.16.15
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.53% 0.407
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 7.2 3.9 10
AV:L/AC:L/Au:N/C:C/I:C/A:C
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

https://security.netapp.com/advisory/ntap-20200103-0001/
Third Party Advisory
https://deshal3v.github.io/blog/kernel-research/mmap_exploitation
Third Party Advisory
Exploit
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be83bbf806822b1b89e0a0f23cd87cddc409e429
Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/media/usb/cpia2/cpia2_core.c
Vendor Advisory