diff options
| author | Jann Horn <jann@thejh.net> | 2015-04-19 02:48:39 +0200 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2015-04-28 12:35:37 +0100 |
| commit | fb8aa6acf19e19953b9bd25c52409406a0f7ea62 (patch) | |
| tree | 8d2ac688d2c9f3678c46ac2259597db097d9908b /include | |
| parent | 018de66830ac0baba8d29fa2d1684e5d53ef3e06 (diff) | |
fs: take i_mutex during prepare_binprm for set[ug]id executables
commit 8b01fc86b9f425899f8a3a8fc1c47d73c2c20543 upstream.
This prevents a race between chown() and execve(), where chowning a
setuid-user binary to root would momentarily make the binary setuid
root.
This patch was mostly written by Linus Torvalds.
Signed-off-by: Jann Horn <jann@thejh.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[ luis: backported to 3.16:
- relaced task_no_new_privs() by current->no_new_privs
- replaced READ_ONCE() by ACCESS_ONCE() ]
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions