korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-15 00:04:15 +08:00
Code Issues Packages Projects Releases Wiki Activity
62ab3d75d3
linux/net/netlabel
History
王贇 a98d38fca3 net: fix NULL pointer reference in cipso_v4_doi_free 
[ Upstream commit 733c99ee8b ]

In netlbl_cipsov4_add_std() when 'doi_def->map.std' alloc
failed, we sometime observe panic:

  BUG: kernel NULL pointer dereference, address:
  ...
  RIP: 0010:cipso_v4_doi_free+0x3a/0x80
  ...
  Call Trace:
   netlbl_cipsov4_add_std+0xf4/0x8c0
   netlbl_cipsov4_add+0x13f/0x1b0
   genl_family_rcv_msg_doit.isra.15+0x132/0x170
   genl_rcv_msg+0x125/0x240

This is because in cipso_v4_doi_free() there is no check
on 'doi_def->map.std' when 'doi_def->type' equal 1, which
is possibe, since netlbl_cipsov4_add_std() haven't initialize
it before alloc 'doi_def->map.std'.

This patch just add the check to prevent panic happen for similar
cases.

Reported-by: Abaci <abaci@linux.alibaba.com>
Signed-off-by: Michael Wang <yun.wang@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-22 11:45:32 +02:00
..
Kconfig calipso: Set the calipso socket label to match the secattr. 2016-06-27 15:02:51 -04:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
netlabel_addrlist.c
netlabel_addrlist.h
netlabel_calipso.c genetlink: mark families as __ro_after_init 2016-10-27 16:16:09 -04:00
netlabel_calipso.h calipso: Add a label cache. 2016-06-27 15:06:17 -04:00
netlabel_cipso_v4.c net: fix NULL pointer reference in cipso_v4_doi_free 2021-09-22 11:45:32 +02:00
netlabel_cipso_v4.h
netlabel_domainhash.c netlabel: fix problems with mapping removal 2020-09-12 13:39:12 +02:00
netlabel_domainhash.h netlabel: Implement CALIPSO config functions for SMACK. 2016-06-27 15:06:18 -04:00
netlabel_kapi.c netlabel: cope with NULL catmap 2020-05-20 08:17:12 +02:00
netlabel_mgmt.c netlabel: Fix memory leak in netlbl_mgmt_add_common 2021-07-20 16:17:36 +02:00
netlabel_mgmt.h netlabel: Add support for creating a CALIPSO protocol domain mapping. 2016-06-27 15:02:49 -04:00
netlabel_unlabeled.c netlabel: fix an uninitialized warning in netlbl_unlabel_staticlist() 2020-11-24 13:05:40 +01:00
netlabel_unlabeled.h
netlabel_user.c netlabel: Initial support for the CALIPSO netlink protocol. 2016-06-27 15:02:46 -04:00
netlabel_user.h