The utimensat system call (sys_utimensat) in Linux kernel 2.6.22 and other
versions before 220.127.116.11 does not check file permissions when certain
UTIME_NOW and UTIME_OMIT combinations are used, which allows local users to
modify file times of arbitrary files, possibly leading to a denial of
The sys_utimensat system call did not correctly check file permissions
in certain situations. A local attacker could exploit this to modify the
file times of arbitrary files which could lead to a denial of service.
Updated: 2015-10-17 03:30:06 UTC (commit 10086)