The utimensat system call (sys_utimensat) in Linux kernel 2.6.22 and other
versions before 22.214.171.124 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: 2015-07-29 20:32:40 UTC (commit 9756)