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| author |   Richard Weinberger <richard@nod.at> | 2016-09-16 11:45:24 +0200 |
|---|---|---|
| committer |   Miklos Szeredi <mszeredi@redhat.com> | 2016-09-21 16:37:07 +0200 |
| commit | 6a45b3628ce4dcf7498b39c87d475bab6e2a9b24 (patch) | |
| tree | fb203edbc99e09b1c34be42f203704a651530ddf /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | ovl: during copy up, switch to mounter's creds early (diff) | |
| download | linux-dev-6a45b3628ce4dcf7498b39c87d475bab6e2a9b24.tar.xz linux-dev-6a45b3628ce4dcf7498b39c87d475bab6e2a9b24.zip | |
ovl: Fix info leak in ovl_lookup_temp()
The function uses the memory address of a struct dentry as unique id.
While the address-based directory entry is only visible to root it is IMHO
still worth fixing since the temporary name does not have to be a kernel
address. It can be any unique number. Replace it by an atomic integer
which is allowed to wrap around.
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Cc: <stable@vger.kernel.org> # v3.18+
Fixes: e9be9d5e76e3 ("overlay filesystem")
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions