|The Vigil@nce team watches public vulnerabilities impacting your computers, and then offers security solutions, a database and tools to fix them.|
Linux kernel: NULL pointer dereference via sock_close/sockfs_setattr
Synthesis of the vulnerability
An attacker can force a NULL pointer to be dereferenced via sock_close/sockfs_setattr of the Linux kernel, in order to trigger a denial of service.
Vulnerable systems: Fedora, Linux, openSUSE Leap, RHEL, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this threat: 1/4.
Consequences of a hack: denial of service on server, denial of service on service.
Pirate's origin: user shell.
Creation date: 13/06/2018.
Références of this weakness: CERTFR-2018-AVI-408, CERTFR-2018-AVI-413, CERTFR-2019-AVI-038, CERTFR-2019-AVI-042, CVE-2018-12232, FEDORA-2018-bb7aab12cb, openSUSE-SU-2019:0065-1, RHSA-2018:2948-01, SUSE-SU-2019:0196-1, SUSE-SU-2019:0222-1, SUSE-SU-2019:0224-1, USN-3752-1, USN-3752-2, USN-3752-3, VIGILANCE-VUL-26414.
Description of the vulnerability
The Noyau Linux product offers a web service.
However, it does not check if a pointer is NULL, before using it.
An attacker can therefore force a NULL pointer to be dereferenced via sock_close/sockfs_setattr of the Linux kernel, in order to trigger a denial of service.
Full Vigil@nce bulletin... (Free trial)
Computer vulnerabilities tracking service
Vigil@nce provides computer vulnerability analysis. Each administrator can customize the list of products for which he wants to receive vulnerability alerts. The technology watch team tracks security threats targeting the computer system. The Vigil@nce computer vulnerability tracking service alerts your teams of vulnerabilities or threats impacting your information system.