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vulnerability CVE-2019-8956

Linux kernel: use after free via sctp_sendmsg

Synthesis of the vulnerability

An attacker can force the usage of a freed memory area via sctp_sendmsg() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
Vulnerable systems: Linux, Ubuntu.
Severity of this threat: 2/4.
Consequences of an attack: administrator access/rights, denial of service on server.
Pirate's origin: user shell.
Creation date: 21/02/2019.
Références of this weakness: CERTFR-2019-AVI-145, CVE-2019-8956, USN-3930-1, USN-3930-2, VIGILANCE-VUL-28580.

Description of the vulnerability

An attacker can force the usage of a freed memory area via sctp_sendmsg() of the Linux kernel, in order to trigger a denial of service, and possibly to run code.
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