Eric Biggers c9f838d104 KEYS: fix keyctl_set_reqkey_keyring() to not leak thread keyrings ... This fixes CVE-2017-7472. Running the following program as an unprivileged user exhausts kernel memory by leaking thread keyrings: #include <keyutils.h> int main() { for (;;) keyctl_set_reqkey_keyring(KEY_REQKEY_DEFL_THREAD_KEYRING); } Fix it by only creating a new thread keyring if there wasn't one before. To make things more consistent, make install_thread_keyring_to_cred() and install_process_keyring_to_cred() both return 0 if the corresponding keyring is already present. Fixes: d84f4f992c ("CRED: Inaugurate COW credentials") Cc: stable@vger.kernel.org # 2.6.29+ Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: David Howells <dhowells@redhat.com>		2017-04-18 15:31:49 +01:00
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apparmor
integrity
keys	KEYS: fix keyctl_set_reqkey_keyring() to not leak thread keyrings	2017-04-18 15:31:49 +01:00
loadpin
selinux
smack
tomoyo
yama
commoncap.c
device_cgroup.c
inode.c
Kconfig
lsm_audit.c
Makefile
min_addr.c
security.c