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d0709f1e66
linux/security/keys
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David Jeffery d0709f1e66 Don't leak a key reference if request_key() tries to use a revoked keyring 
If a request_key() call to allocate and fill out a key attempts to insert the
key structure into a revoked keyring, the key will leak, using memory and part
of the user's key quota until the system reboots. This is from a failure of
construct_alloc_key() to decrement the key's reference count after the attempt
to insert into the requested keyring is rejected.

key_put() needs to be called in the link_prealloc_failed callpath to ensure
the unused key is released.

Signed-off-by: David Jeffery <djeffery@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2015-02-16 13:45:16 +11:00
..
encrypted-keys KEYS: Fix stale key registration at error path 2014-12-06 21:50:36 -05:00
big_key.c KEYS: Remove key_type::match in favour of overriding default by match_preparse 2014-09-16 17:36:06 +01:00
compat.c security/compat: convert to COMPAT_SYSCALL_DEFINE 2014-03-06 16:30:42 +01:00
gc.c KEYS: close race between key lookup and freeing 2015-01-05 15:58:01 +00:00
internal.h KEYS: request_key() should reget expired keys rather than give EKEYEXPIRED 2014-12-01 22:52:53 +00:00
Kconfig KEYS: Make /proc/keys unconditional if CONFIG_KEYS=y 2015-01-22 22:34:32 +00:00
key.c KEYS: remove a bogus NULL check 2014-12-16 18:05:20 +11:00
keyctl.c KEYS: Fix the size of the key description passed to/from userspace 2014-12-01 22:52:45 +00:00
keyring.c KEYS: request_key() should reget expired keys rather than give EKEYEXPIRED 2014-12-01 22:52:53 +00:00
Makefile KEYS: Add per-user_namespace registers for persistent per-UID kerberos caches 2013-09-24 10:35:19 +01:00
permission.c KEYS: Move the flags representing required permission to linux/key.h 2014-03-14 17:44:49 +00:00
persistent.c KEYS: Move the flags representing required permission to linux/key.h 2014-03-14 17:44:49 +00:00
proc.c KEYS: Make /proc/keys unconditional if CONFIG_KEYS=y 2015-01-22 22:34:32 +00:00
process_keys.c KEYS: Make the key matching functions return bool 2014-09-16 17:36:08 +01:00
request_key_auth.c KEYS: Simplify KEYRING_SEARCH_{NO,DO}_STATE_CHECK flags 2014-12-01 22:52:50 +00:00
request_key.c Don't leak a key reference if request_key() tries to use a revoked keyring 2015-02-16 13:45:16 +11:00
sysctl.c security: Convert use of typedef ctl_table to struct ctl_table 2014-04-15 13:39:58 +10:00
trusted.c KEYS: Remove key_type::match in favour of overriding default by match_preparse 2014-09-16 17:36:06 +01:00
trusted.h trusted-keys: rename trusted_defined files to trusted 2011-01-24 10:14:22 +11:00
user_defined.c KEYS: Remove key_type::match in favour of overriding default by match_preparse 2014-09-16 17:36:06 +01:00