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| author | Paul Moore <paul.moore@hp.com> | 2008-12-03 00:37:04 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-12-03 00:37:04 -0800 |
| commit | d25830e5507f6bc815f5dd7e2eb65f172e878a2b (patch) | |
| tree | 8d85a75f93afaf044a8f52783df70cb2ee8118cf /net/netlabel/netlabel_unlabeled.c | |
| parent | efba01803c8570bab11d0d6188a630231d0ddccf (diff) | |
| download | lwn-d25830e5507f6bc815f5dd7e2eb65f172e878a2b.tar.gz lwn-d25830e5507f6bc815f5dd7e2eb65f172e878a2b.zip | |
netlabel: Fix a potential NULL pointer dereference
Fix a potential NULL pointer dereference seen when trying to remove a
static label configuration with an invalid address/mask combination.
Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlabel/netlabel_unlabeled.c')
| -rw-r--r-- | net/netlabel/netlabel_unlabeled.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c index e8a5c32b0f10..90c8506a0aac 100644 --- a/net/netlabel/netlabel_unlabeled.c +++ b/net/netlabel/netlabel_unlabeled.c @@ -574,9 +574,10 @@ static int netlbl_unlhsh_remove_addr4(struct net *net, list_entry = netlbl_af4list_remove(addr->s_addr, mask->s_addr, &iface->addr4_list); spin_unlock(&netlbl_unlhsh_lock); - if (list_entry == NULL) + if (list_entry != NULL) + entry = netlbl_unlhsh_addr4_entry(list_entry); + else ret_val = -ENOENT; - entry = netlbl_unlhsh_addr4_entry(list_entry); audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_STCDEL, audit_info); @@ -634,9 +635,10 @@ static int netlbl_unlhsh_remove_addr6(struct net *net, spin_lock(&netlbl_unlhsh_lock); list_entry = netlbl_af6list_remove(addr, mask, &iface->addr6_list); spin_unlock(&netlbl_unlhsh_lock); - if (list_entry == NULL) + if (list_entry != NULL) + entry = netlbl_unlhsh_addr6_entry(list_entry); + else ret_val = -ENOENT; - entry = netlbl_unlhsh_addr6_entry(list_entry); audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_STCDEL, audit_info); |