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author | Jia-Ju Bai <baijiaju1990@gmail.com> | 2019-07-23 13:00:15 +0300 |
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committer | Casey Schaufler <casey@schaufler-ca.com> | 2019-09-04 19:37:07 +0300 |
commit | 3f4287e7d98a2954f20bf96c567fdffcd2b63eb9 (patch) | |
tree | 2b96ff5097ecde8fc58fbe71fd67abde2cf7be94 /security/safesetid | |
parent | a1a07f22346144d1e2108f9faa2a41fe67579e85 (diff) | |
download | linux-3f4287e7d98a2954f20bf96c567fdffcd2b63eb9.tar.xz |
security: smack: Fix possible null-pointer dereferences in smack_socket_sock_rcv_skb()
In smack_socket_sock_rcv_skb(), there is an if statement
on line 3920 to check whether skb is NULL:
if (skb && skb->secmark != 0)
This check indicates skb can be NULL in some cases.
But on lines 3931 and 3932, skb is used:
ad.a.u.net->netif = skb->skb_iif;
ipv6_skb_to_auditdata(skb, &ad.a, NULL);
Thus, possible null-pointer dereferences may occur when skb is NULL.
To fix these possible bugs, an if statement is added to check skb.
These bugs are found by a static analysis tool STCheck written by us.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Diffstat (limited to 'security/safesetid')
0 files changed, 0 insertions, 0 deletions