Information disclosure in Linux kernel - CVE-2017-7889
Published: February 26, 2018
Vulnerability identifier: #VU10724
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-7889
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to gain access to potentially sensitive information.
The weakness exists in the CONFIG_STRICT_DEVMEM protection mechanism due to an improper enforcement. A local attacker can read or write to kernel memory locations in the first megabyte and bypass slab-allocation access restrictions.
The weakness exists in the CONFIG_STRICT_DEVMEM protection mechanism due to an improper enforcement. A local attacker can read or write to kernel memory locations in the first megabyte and bypass slab-allocation access restrictions.
Affected software
Linux kernel
Ubuntu
Fedora
kernel
Ubuntu
Fedora
kernel
How to mitigate CVE-2017-7889
Install update from vendor's website.
kernel - addressed in versions 4.10.12-100.fc24, 4.10.12-200.fc25, 4.10.13-100.fc24