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linux/security/keys
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Eric Biggers 18026d8668 KEYS: reject NULL restriction string when type is specified 
keyctl_restrict_keyring() allows through a NULL restriction when the
"type" is non-NULL, which causes a NULL pointer dereference in
asymmetric_lookup_restriction() when it calls strcmp() on the
restriction string.

But no key types actually use a "NULL restriction" to mean anything, so
update keyctl_restrict_keyring() to reject it with EINVAL.

Reported-by: syzbot <syzkaller@googlegroups.com>
Fixes: 97d3aa0f31 ("KEYS: Add a lookup_restriction function for the asymmetric key type")
Cc: <stable@vger.kernel.org> # v4.12+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2017-12-08 15:13:29 +00:00
..
encrypted-keys License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
big_key.c KEYS: Fix race between updating and finding a negative key 2017-10-18 09:12:40 +01:00
compat_dh.c KEYS: DH: validate __spare field 2017-07-14 11:01:38 +10:00
compat.c KEYS: add SP800-56A KDF support for DH 2017-04-04 22:33:38 +01:00
dh.c KEYS: DH: validate __spare field 2017-07-14 11:01:38 +10:00
gc.c Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-25 08:37:16 -10:00
internal.h security: keys: Replace time_t/timespec with time64_t 2017-11-15 16:38:45 +00:00
Kconfig security/keys: BIG_KEY requires CONFIG_CRYPTO 2017-10-18 09:12:40 +01:00
key.c security: keys: remove redundant assignment to key_ref 2017-12-08 15:13:29 +00:00
keyctl.c KEYS: reject NULL restriction string when type is specified 2017-12-08 15:13:29 +00:00
keyring.c security: keys: Replace time_t/timespec with time64_t 2017-11-15 16:38:45 +00:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
permission.c security: keys: Replace time_t/timespec with time64_t 2017-11-15 16:38:45 +00:00
persistent.c sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h> 2017-03-02 08:42:31 +01:00
proc.c security: keys: Replace time_t/timespec with time64_t 2017-11-15 16:38:45 +00:00
process_keys.c security: keys: Replace time_t/timespec with time64_t 2017-11-15 16:38:45 +00:00
request_key_auth.c KEYS: Fix race between updating and finding a negative key 2017-10-18 09:12:40 +01:00
request_key.c KEYS: add missing permission check for request_key() destination 2017-12-08 15:13:27 +00:00
sysctl.c security: Convert use of typedef ctl_table to struct ctl_table 2014-04-15 13:39:58 +10:00
trusted.c KEYS: trusted: fix writing past end of buffer in trusted_read() 2017-11-02 20:58:07 +11:00
trusted.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
user_defined.c KEYS: Fix race between updating and finding a negative key 2017-10-18 09:12:40 +01:00