Race Condition Affecting perf package, versions <0:3.10.0-693.1.1.el7

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

Race condition in the fsnotify implementation in the Linux kernel through 4.12.4 allows local users to gain privileges or cause a denial of service (memory corruption) via a crafted application that leverages simultaneous execution of the inotify_handle_event and vfs_rename functions.

• http://www.securityfocus.com/bid/100123
• https://source.android.com/security/bulletin/2017-12-01
• https://access.redhat.com/security/cve/CVE-2017-7533
• http://www.debian.org/security/2017/dsa-3927
• http://www.debian.org/security/2017/dsa-3945
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=49d31c2f389acfe83417083e1208422b4091cd9e
• http://openwall.com/lists/oss-security/2017/08/03/2
• https://bugzilla.redhat.com/show_bug.cgi?id=1468283
• https://github.com/torvalds/linux/commit/49d31c2f389acfe83417083e1208422b4091cd9e
• https://patchwork.kernel.org/patch/9755753/
• https://patchwork.kernel.org/patch/9755757/
• https://www.mail-archive.com/linux-kernel@vger.kernel.org/msg1408967.html
• http://www.openwall.com/lists/oss-security/2019/06/27/7
• http://www.openwall.com/lists/oss-security/2019/06/28/1
• http://www.openwall.com/lists/oss-security/2019/06/28/2
• https://access.redhat.com/errata/RHSA-2017:2473
• http://www.securitytracker.com/id/1039075
• https://www.mail-archive.com/linux-kernel%40vger.kernel.org/msg1408967.html
• https://www.exploit-db.com/exploits/44302