Leo Stone 36b385d0f2 safesetid: check size of policy writes ...

[ Upstream commit f09ff307c7 ]

syzbot attempts to write a buffer with a large size to a sysfs entry
with writes handled by handle_policy_update(), triggering a warning
in kmalloc.

Check the size specified for write buffers before allocating.

Reported-by: syzbot+4eb7a741b3216020043a@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=4eb7a741b3216020043a
Signed-off-by: Leo Stone <leocstone@gmail.com>
[PM: subject tweak]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-02-17 10:04:49 +01:00

..

Kconfig

…

lsm.c

…

lsm.h

…

Makefile

…

securityfs.c

safesetid: check size of policy writes

2025-02-17 10:04:49 +01:00