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authorJohn Johansen <john.johansen@canonical.com>2023-04-14 10:24:47 +0300
committerJohn Johansen <john.johansen@canonical.com>2023-07-06 20:58:49 +0300
commit6600e9f692e36e265ef0828f08337fa294bb330f (patch)
tree8975dd52396351548f93dcb8eacc87d998e32c74 /security
parent000518bc5aef25d3f703592a0296d578c98b1517 (diff)
downloadlinux-6600e9f692e36e265ef0828f08337fa294bb330f.tar.xz
apparmor: add missing failure check in compute_xmatch_perms
Add check for failure to allocate the permission table. Fixes: caa9f579ca72 ("apparmor: isolate policy backwards compatibility to its own file") Signed-off-by: John Johansen <john.johansen@canonical.com>
Diffstat (limited to 'security')
-rw-r--r--security/apparmor/policy_compat.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/security/apparmor/policy_compat.c b/security/apparmor/policy_compat.c
index 9e52e218bf30..b2ec7fb04e83 100644
--- a/security/apparmor/policy_compat.c
+++ b/security/apparmor/policy_compat.c
@@ -180,6 +180,8 @@ static struct aa_perms *compute_xmatch_perms(struct aa_dfa *xmatch)
state_count = xmatch->tables[YYTD_ID_BASE]->td_lolen;
/* DFAs are restricted from having a state_count of less than 2 */
perms = kvcalloc(state_count, sizeof(struct aa_perms), GFP_KERNEL);
+ if (!perms)
+ return NULL;
/* zero init so skip the trap state (state == 0) */
for (state = 1; state < state_count; state++)