Description

Race condition in fs/timerfd.c in the Linux kernel before 4.10.15 allows local users to gain privileges or cause a denial of service (list corruption or use-after-free) via simultaneous file-descriptor operations that leverage improper might_cancel queueing.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1e38da300e1e395a15048b0af1e5305bd91402f6

http://www.debian.org/security/2017/dsa-3981

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.15

http://www.securityfocus.com/bid/100215

https://access.redhat.com/errata/RHSA-2018:3083

https://access.redhat.com/errata/RHSA-2018:3096

https://bugzilla.redhat.com/show_bug.cgi?id=1481136

https://github.com/torvalds/linux/commit/1e38da300e1e395a15048b0af1e5305bd91402f6

https://source.android.com/security/bulletin/2017-08-01

https://www.exploit-db.com/exploits/43345/

Details

Risk Information

CVSS v2

CVSS v3