Description

Race condition in kernel/events/core.c in the Linux kernel before 4.9.7 allows local users to gain privileges via a crafted application that makes concurrent perf_event_open system calls for moving a software group into a hardware context. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-6786.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=321027c1fe77f892f4ea07846aeae08cefbbb290

http://www.debian.org/security/2017/dsa-3791

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.7

http://www.openwall.com/lists/oss-security/2017/02/16/1

http://www.securityfocus.com/bid/96264

https://access.redhat.com/errata/RHSA-2017:1842

https://access.redhat.com/errata/RHSA-2017:2077

https://access.redhat.com/errata/RHSA-2017:2669

https://access.redhat.com/errata/RHSA-2018:1854

https://bugzilla.redhat.com/show_bug.cgi?id=1422825

https://github.com/torvalds/linux/commit/321027c1fe77f892f4ea07846aeae08cefbbb290

https://source.android.com/security/bulletin/pixel/2017-11-01

Details

Risk Information

CVSS v2

CVSS v3