diff options
Diffstat (limited to 'security')
| -rw-r--r-- | security/apparmor/domain.c | 5 | ||||
| -rw-r--r-- | security/apparmor/lsm.c | 2 | ||||
| -rw-r--r-- | security/security.c | 7 | ||||
| -rw-r--r-- | security/selinux/ss/policydb.c | 3 | ||||
| -rw-r--r-- | security/yama/yama_lsm.c | 4 |
5 files changed, 18 insertions, 3 deletions
diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c index 08c88de0ffda..11975ec8d566 100644 --- a/security/apparmor/domain.c +++ b/security/apparmor/domain.c @@ -1444,7 +1444,10 @@ check: new = aa_label_merge(label, target, GFP_KERNEL); if (IS_ERR_OR_NULL(new)) { info = "failed to build target label"; - error = PTR_ERR(new); + if (!new) + error = -ENOMEM; + else + error = PTR_ERR(new); new = NULL; perms.allow = 0; goto audit; diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c index 2c010874329f..8db1731d046a 100644 --- a/security/apparmor/lsm.c +++ b/security/apparmor/lsm.c @@ -1599,12 +1599,14 @@ static unsigned int apparmor_ipv4_postroute(void *priv, return apparmor_ip_postroute(priv, skb, state); } +#if IS_ENABLED(CONFIG_IPV6) static unsigned int apparmor_ipv6_postroute(void *priv, struct sk_buff *skb, const struct nf_hook_state *state) { return apparmor_ip_postroute(priv, skb, state); } +#endif static const struct nf_hook_ops apparmor_nf_ops[] = { { diff --git a/security/security.c b/security/security.c index f1b8d2587639..55bc49027ba9 100644 --- a/security/security.c +++ b/security/security.c @@ -1027,6 +1027,13 @@ int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) void security_cred_free(struct cred *cred) { + /* + * There is a failure case in prepare_creds() that + * may result in a call here with ->security being NULL. + */ + if (unlikely(cred->security == NULL)) + return; + call_void_hook(cred_free, cred); } diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c index a50d625e7946..c1c31e33657a 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -732,7 +732,8 @@ static int sens_destroy(void *key, void *datum, void *p) kfree(key); if (datum) { levdatum = datum; - ebitmap_destroy(&levdatum->level->cat); + if (levdatum->level) + ebitmap_destroy(&levdatum->level->cat); kfree(levdatum->level); } kfree(datum); diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c index ffda91a4a1aa..02514fe558b4 100644 --- a/security/yama/yama_lsm.c +++ b/security/yama/yama_lsm.c @@ -368,7 +368,9 @@ static int yama_ptrace_access_check(struct task_struct *child, break; case YAMA_SCOPE_RELATIONAL: rcu_read_lock(); - if (!task_is_descendant(current, child) && + if (!pid_alive(child)) + rc = -EPERM; + if (!rc && !task_is_descendant(current, child) && !ptracer_exception_found(current, child) && !ns_capable(__task_cred(child)->user_ns, CAP_SYS_PTRACE)) rc = -EPERM; |