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Debian Security Advisory DSA-4484-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
July 20, 2019                         https://www.debian.org/security/faq
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Package        : linux
CVE ID         : CVE-2019-13272

Jann 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 the oldstable distribution (stretch), this problem has been fixed
in version 4.9.168-1+deb9u4.

For the stable distribution (buster), this problem has been fixed in
version 4.19.37-5+deb10u1. This update includes as well a patch for a
regression introduced by the original fix for CVE-2019-11478 (#930904).

We recommend that you upgrade your linux packages.

For the detailed security status of linux please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/linux

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org