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| author | Oleg Nesterov <[email protected]> | 2017-09-27 15:25:30 +0000 |
|---|---|---|
| committer | Kees Cook <[email protected]> | 2017-09-28 05:51:12 +0000 |
| commit | 66a733ea6b611aecf0119514d2dddab5f9d6c01e (patch) | |
| tree | 0b1d31848a156eb1008a3adb65fc716fe446153f /net/unix/af_unix.c | |
| parent | Linux 4.14-rc2 (diff) | |
| download | kernel-66a733ea6b611aecf0119514d2dddab5f9d6c01e.tar.gz kernel-66a733ea6b611aecf0119514d2dddab5f9d6c01e.zip | |
seccomp: fix the usage of get/put_seccomp_filter() in seccomp_get_filter()
As Chris explains, get_seccomp_filter() and put_seccomp_filter() can end
up using different filters. Once we drop ->siglock it is possible for
task->seccomp.filter to have been replaced by SECCOMP_FILTER_FLAG_TSYNC.
Fixes: f8e529ed941b ("seccomp, ptrace: add support for dumping seccomp filters")
Reported-by: Chris Salls <[email protected]>
Cc: [email protected] # needs s/refcount_/atomic_/ for v4.12 and earlier
Signed-off-by: Oleg Nesterov <[email protected]>
[tycho: add __get_seccomp_filter vs. open coding refcount_inc()]
Signed-off-by: Tycho Andersen <[email protected]>
[kees: tweak commit log]
Signed-off-by: Kees Cook <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions