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vulnerability CVE-2018-7191

Linux kernel: NULL pointer dereference via TUNSETIFF

Synthesis of the vulnerability

An attacker can force a NULL pointer to be dereferenced via TUNSETIFF of the Linux kernel, in order to trigger a denial of service.
Vulnerable systems: Linux, openSUSE Leap, SUSE Linux Enterprise Desktop, SLES.
Severity of this threat: 1/4.
Consequences of an attack: denial of service on server, denial of service on service, denial of service on client.
Pirate's origin: user shell.
Creation date: 20/05/2019.
Références of this weakness: CERTFR-2019-AVI-346, CVE-2018-7191, openSUSE-SU-2019:1479-1, openSUSE-SU-2019:1570-1, openSUSE-SU-2019:1579-1, SUSE-SU-2019:1527-1, SUSE-SU-2019:1529-1, SUSE-SU-2019:1530-1, SUSE-SU-2019:1532-1, SUSE-SU-2019:1534-1, SUSE-SU-2019:1535-1, SUSE-SU-2019:1536-1, SUSE-SU-2019:1550-1, SUSE-SU-2019:1870-1, VIGILANCE-VUL-29360.

Description of the vulnerability

An attacker can force a NULL pointer to be dereferenced via TUNSETIFF of the Linux kernel, in order to trigger a denial of service.
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