SUSE: CVE-2019-13272: SUSE Linux Security Advisory
Description
In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.
Solution(s)
- suse-upgrade-cluster-md-kmp-default
- suse-upgrade-cluster-network-kmp-default
- suse-upgrade-dlm-kmp-default
- suse-upgrade-gfs2-kmp-default
- suse-upgrade-kernel-default
- suse-upgrade-kernel-livepatch-4_12_14-150_14-default
- suse-upgrade-kernel-livepatch-4_12_14-150_17-default
- suse-upgrade-kernel-livepatch-4_12_14-150_22-default
- suse-upgrade-kernel-livepatch-4_12_14-195-default
- suse-upgrade-kernel-livepatch-4_12_14-197_4-default
- suse-upgrade-kernel-livepatch-4_12_14-197_7-default
- suse-upgrade-kernel-livepatch-4_12_14-25_28-default
- suse-upgrade-ocfs2-kmp-default
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