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| author | Muhammad Usama Anjum <usama.anjum@collabora.com> | 2022-10-04 13:45:15 +0500 |
|---|---|---|
| committer | John Johansen <john.johansen@canonical.com> | 2022-10-04 02:34:29 -0700 |
| commit | 5515a8e30eaa8ae0d57ec59c908716cf2af114ae (patch) | |
| tree | 3c05f5a57eeb4a328dc41362f90bb4e93c427276 /security | |
| parent | 32490541682bf8ea445e9bd29c866981851e0912 (diff) | |
| download | linux-5515a8e30eaa8ae0d57ec59c908716cf2af114ae.tar.gz linux-5515a8e30eaa8ae0d57ec59c908716cf2af114ae.tar.bz2 linux-5515a8e30eaa8ae0d57ec59c908716cf2af114ae.zip | |
apparmor: store return value of unpack_perms_table() to signed variable
The unpack_perms_table() can return error which is negative value. Store
the return value to a signed variable. policy->size is unsigned
variable. It shouldn't be used to store the return status.
Fixes: 2d6b2dea7f3c ("apparmor: add the ability for policy to specify a permission table")
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/apparmor/policy_unpack.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c index 45c9dfdc8e0d..09f316943951 100644 --- a/security/apparmor/policy_unpack.c +++ b/security/apparmor/policy_unpack.c @@ -734,14 +734,18 @@ static int unpack_pdb(struct aa_ext *e, struct aa_policydb *policy, { void *pos = e->pos; int i, flags, error = -EPROTO; + ssize_t size; - policy->size = unpack_perms_table(e, &policy->perms); - if (policy->size < 0) { - error = policy->size; + size = unpack_perms_table(e, &policy->perms); + if (size < 0) { + error = size; policy->perms = NULL; *info = "failed to unpack - perms"; goto fail; - } else if (policy->perms) { + } + policy->size = size; + + if (policy->perms) { /* perms table present accept is index */ flags = TO_ACCEPT1_FLAG(YYTD_DATA32); } else { |