Debian DLA-1863-1 : linux-4.9 security update
High Nessus Plugin ID 126965
SynopsisThe remote Debian host is missing a security update.
DescriptionJann Horn discovered that the ptrace subsystem in the Linux kernel mishandles the management of the credentials of a process that wants to create a ptrace relationship, allowing a local user to obtain root privileges under certain scenarios.
For Debian 8 'Jessie', this problem has been fixed in version 4.9.168-1+deb9u4~deb8u1.
We recommend that you upgrade your linux-4.9 packages.
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
SolutionUpgrade the affected packages.