Description
vcs_write in drivers/tty/vt/vc_screen.c in the Linux kernel through 5.3.13 does not prevent write access to vcsu devices, aka CID-0c9acb1af77a.
References (5)
Core 5
Core References
Mailing List x_refsource_misc
https://lore.kernel.org/lkml/c30fc539-68a8-65d7-226c-6f8e6fd8bdfb%40suse.com/
Patch, Vendor Advisory x_refsource_misc
https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git/commit/?h=tty-testing&id=0c9acb1af77a3cb8707e43f45b72c95266903cee
Vendor Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20200103-0001/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4258-1/
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4284-1/
Scores
CVSS v3
7.8
EPSS
0.0006
EPSS Percentile
19.6%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-125
Status
published
Products (1)
linux/linux_kernel
< 5.3.13
Published
Nov 25, 2019
Tracked Since
Feb 18, 2026