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CVE-2019-3901

Status Candidate

Overview

A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8.

Related Files

Red Hat Security Advisory 2020-1070-01
Posted Apr 1, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1070-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include bypass, denial of service, information leakage, integer overflow, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2015-9289, CVE-2017-17807, CVE-2018-19985, CVE-2018-20169, CVE-2018-7191, CVE-2019-10207, CVE-2019-10638, CVE-2019-10639, CVE-2019-11190, CVE-2019-11884, CVE-2019-12382, CVE-2019-13233, CVE-2019-14283, CVE-2019-15916, CVE-2019-16746, CVE-2019-3901, CVE-2019-9503
MD5 | 578fbb91387a11babf72fafe70ea13b5
Red Hat Security Advisory 2020-1016-01
Posted Mar 31, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-1016-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include bypass, denial of service, information leakage, and use-after-free vulnerabilities.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2015-9289, CVE-2017-17807, CVE-2018-19985, CVE-2018-20169, CVE-2018-7191, CVE-2019-10207, CVE-2019-10638, CVE-2019-10639, CVE-2019-11190, CVE-2019-11884, CVE-2019-12382, CVE-2019-13233, CVE-2019-13648, CVE-2019-14283, CVE-2019-15916, CVE-2019-16746, CVE-2019-18660, CVE-2019-3901, CVE-2019-9503
MD5 | 36314b16600459fc17e8c0b6131cd03e
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