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libceph: fix crypto key null deref, memory leak

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Avoid crashing if the crypto key payload was NULL, as when it was not correctly
allocated and initialized.  Also, avoid leaking it.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
This commit is contained in:
Sylvain Munaut 2012-08-02 09:12:59 -07:00 committed by Sage Weil
parent 5ef50c3bec
commit f0666b1ac8
2 changed files with 3 additions and 1 deletions
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1
net/ceph/crypto.c
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@ -466,6 +466,7 @@ void ceph_key_destroy(struct key *key) {
struct ceph_crypto_key *ckey = key->payload.data;
ceph_crypto_key_destroy(ckey);
kfree(ckey);
}
struct key_type key_type_ceph = {

3
net/ceph/crypto.h
View File

@ -16,7 +16,8 @@ struct ceph_crypto_key {
static inline void ceph_crypto_key_destroy(struct ceph_crypto_key *key)
{
kfree(key->key);
if (key)
kfree(key->key);
}
extern int ceph_crypto_key_clone(struct ceph_crypto_key *dst,