CVE-2019-18675

EUVD-2019-8391
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.8 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 32%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
𝑥
< 3.16.60
linuxlinux_kernel
3.17 ≤
𝑥
< 3.18.113
linuxlinux_kernel
3.19 ≤
𝑥
< 4.4.137
linuxlinux_kernel
4.5 ≤
𝑥
< 4.9.108
linuxlinux_kernel
4.10 ≤
𝑥
< 4.14.49
linuxlinux_kernel
4.15 ≤
𝑥
< 4.16.15
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.106-3
fixed
bookworm (security)
6.1.112-1
fixed
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.226-1
fixed
sid
6.11.6-1
fixed
trixie
6.11.5-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
linux
bionic
Fixed 4.15.0-36.39
released
disco
ignored
eoan
not-affected
focal
not-affected
trusty
ignored
xenial
Fixed 4.4.0-134.160
released
linux-aws
bionic
Fixed 4.15.0-1023.23
released
disco
ignored
eoan
not-affected
focal
not-affected
trusty
ignored
xenial
Fixed 4.4.0-1066.76
released
linux-aws-5.0
bionic
ignored
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-aws-hwe
bionic
dne
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
not-affected
linux-azure
bionic
ignored
disco
ignored
eoan
not-affected
focal
not-affected
trusty
ignored
xenial
Fixed 4.15.0-1025.26~16.04.1
released
linux-azure-5.3
bionic
not-affected
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-azure-edge
bionic
ignored
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
ignored
linux-gcp
bionic
ignored
disco
ignored
eoan
not-affected
focal
not-affected
trusty
dne
xenial
Fixed 4.15.0-1021.22~16.04.1
released
linux-gcp-5.3
bionic
not-affected
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-gcp-edge
bionic
ignored
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-gke-4.15
bionic
not-affected
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-gke-5.0
bionic
not-affected
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-gke-5.3
bionic
not-affected
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-hwe
bionic
not-affected
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
Fixed 4.15.0-36.39~16.04.1
released
linux-hwe-edge
bionic
ignored
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
ignored
linux-kvm
bionic
Fixed 4.15.0-1023.23
released
disco
ignored
eoan
not-affected
focal
not-affected
trusty
dne
xenial
Fixed 4.4.0-1032.38
released
linux-lts-trusty
bionic
dne
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-lts-xenial
bionic
dne
disco
dne
eoan
dne
focal
dne
trusty
ignored
xenial
dne
linux-oem
bionic
Fixed 4.15.0-1021.24
released
disco
ignored
eoan
not-affected
focal
dne
trusty
dne
xenial
ignored
linux-oem-5.6
bionic
dne
eoan
dne
focal
not-affected
trusty
dne
xenial
dne
linux-oem-osp1
bionic
not-affected
disco
ignored
eoan
not-affected
focal
dne
trusty
dne
xenial
dne
linux-oracle
bionic
not-affected
disco
ignored
eoan
not-affected
focal
not-affected
trusty
dne
xenial
not-affected
linux-oracle-5.0
bionic
ignored
disco
dne
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-oracle-5.3
bionic
not-affected
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-raspi2
bionic
Fixed 4.15.0-1024.26
released
disco
ignored
eoan
not-affected
focal
ignored
trusty
dne
xenial
Fixed 4.4.0-1095.103
released
linux-raspi2-5.3
bionic
not-affected
eoan
dne
focal
dne
trusty
dne
xenial
dne
linux-snapdragon
bionic
Fixed 4.15.0-1053.57
released
disco
ignored
eoan
dne
focal
dne
trusty
dne
xenial
Fixed 4.4.0-1099.104
released
Common Weakness Enumeration
References
https://deshal3v.github.io/blog/kernel-research/mmap_exploitation
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be83bbf806822b1b89e0a0f23cd87cddc409e429
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/media/usb/cpia2/cpia2_core.c
https://security.netapp.com/advisory/ntap-20200103-0001/
https://deshal3v.github.io/blog/kernel-research/mmap_exploitation
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=be83bbf806822b1b89e0a0f23cd87cddc409e429
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/media/usb/cpia2/cpia2_core.c
https://security.netapp.com/advisory/ntap-20200103-0001/