diff options
| author |   Tyler Hicks <tyhicks@canonical.com> | 2018-07-06 05:25:01 +0000 |
|---|---|---|
| committer |   John Johansen <john.johansen@canonical.com> | 2018-07-19 16:29:13 -0700 |
| commit | f4585bc20fc785d94192cf780ee925e25891ddfd (patch) | |
| tree | 980af813ba27efaf57f98d3c7323a716ca40b221 /security | |
| parent | apparmor: Check buffer bounds when mapping permissions mask (diff) | |
| download | linux-dev-f4585bc20fc785d94192cf780ee925e25891ddfd.tar.xz linux-dev-f4585bc20fc785d94192cf780ee925e25891ddfd.zip | |
apparmor: Fully initialize aa_perms struct when answering userspace query
Fully initialize the aa_perms struct in profile_query_cb() to avoid the
potential of using an uninitialized struct member's value in a response
to a query from userspace.
Detected by CoverityScan CID#1415126 ("Uninitialized scalar variable")
Fixes: 4f3b3f2d79a4 ("apparmor: add profile permission query ability")
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Acked-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/apparmor/apparmorfs.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c index 949dd8a48164..e09fe4d7307c 100644 --- a/security/apparmor/apparmorfs.c +++ b/security/apparmor/apparmorfs.c @@ -603,7 +603,7 @@ static const struct file_operations aa_fs_ns_revision_fops = { static void profile_query_cb(struct aa_profile *profile, struct aa_perms *perms, const char *match_str, size_t match_len) { - struct aa_perms tmp; + struct aa_perms tmp = { }; struct aa_dfa *dfa; unsigned int state = 0; @@ -613,7 +613,6 @@ static void profile_query_cb(struct aa_profile *profile, struct aa_perms *perms, dfa = profile->file.dfa; state = aa_dfa_match_len(dfa, profile->file.start, match_str + 1, match_len - 1); - tmp = nullperms; if (state) { struct path_cond cond = { }; @@ -627,8 +626,6 @@ static void profile_query_cb(struct aa_profile *profile, struct aa_perms *perms, match_str, match_len); if (state) aa_compute_perms(dfa, state, &tmp); - else - tmp = nullperms; } aa_apply_modes_to_perms(profile, &tmp); aa_perms_accum_raw(perms, &tmp); |