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David Howells 3d96406c7d KEYS: Fix bug in keyctl_session_to_parent() if parent has no session keyring ... Fix a bug in keyctl_session_to_parent() whereby it tries to check the ownership of the parent process's session keyring whether or not the parent has a session keyring [CVE-2010-2960]. This results in the following oops: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a0 IP: [<ffffffff811ae4dd>] keyctl_session_to_parent+0x251/0x443 ... Call Trace: [<ffffffff811ae2f3>] ? keyctl_session_to_parent+0x67/0x443 [<ffffffff8109d286>] ? __do_fault+0x24b/0x3d0 [<ffffffff811af98c>] sys_keyctl+0xb4/0xb8 [<ffffffff81001eab>] system_call_fastpath+0x16/0x1b if the parent process has no session keyring. If the system is using pam_keyinit then it mostly protected against this as all processes derived from a login will have inherited the session keyring created by pam_keyinit during the log in procedure. To test this, pam_keyinit calls need to be commented out in /etc/pam.d/. Reported-by: Tavis Ormandy <taviso@cmpxchg8b.com> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Tavis Ormandy <taviso@cmpxchg8b.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		15 years ago
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apparmor	AppArmor: Fix locking from removal of profile namespace	15 years ago
integrity/ima	ima: always maintain counters	15 years ago
keys	KEYS: Fix bug in keyctl_session_to_parent() if parent has no session keyring	15 years ago
selinux	tty: fix fu_list abuse	15 years ago
smack	…
tomoyo	…
Kconfig	…
Makefile	…
capability.c	Merge branch 'writable_limits' of git://decibel.fi.muni.cz/~xslaby/linux	15 years ago
commoncap.c	Make do_execve() take a const filename pointer	15 years ago
device_cgroup.c	…
inode.c	…
lsm_audit.c	…
min_addr.c	…
security.c	Merge branch 'writable_limits' of git://decibel.fi.muni.cz/~xslaby/linux	15 years ago