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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2018-04-20 23:56:03 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-04-21 02:18:35 +0200 |
| commit | 2e0ad552f5f8cd0fda02bc45fcd2b89821c62fd1 (patch) | |
| tree | 1b22f2e03dc3d0e82048a454b3daeb5e54efd11b /fs/proc/loadavg.c | |
| parent | autofs: mount point create should honour passed in mode (diff) | |
| download | linux-2e0ad552f5f8cd0fda02bc45fcd2b89821c62fd1.tar.xz linux-2e0ad552f5f8cd0fda02bc45fcd2b89821c62fd1.zip | |
proc: revalidate kernel thread inodes to root:root
task_dump_owner() has the following code:
mm = task->mm;
if (mm) {
if (get_dumpable(mm) != SUID_DUMP_USER) {
uid = ...
}
}
Check for ->mm is buggy -- kernel thread might be borrowing mm
and inode will go to some random uid:gid pair.
Link: http://lkml.kernel.org/r/20180412220109.GA20978@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/loadavg.c')
0 files changed, 0 insertions, 0 deletions