王贇 a4301d06a0 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>		2021-09-18 13:40:35 +02:00
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Kconfig	treewide: replace '---help---' in Kconfig files with 'help'	2020-06-14 01:57:21 +09:00
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	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
netlabel_addrlist.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
netlabel_calipso.c	genetlink: move to smaller ops wherever possible	2020-10-02 19:11:11 -07:00
netlabel_calipso.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
netlabel_cipso_v4.c	net: fix NULL pointer reference in cipso_v4_doi_free	2021-09-18 13:40:35 +02:00
netlabel_cipso_v4.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
netlabel_domainhash.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-09-04 21:28:59 -07:00
netlabel_domainhash.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
netlabel_kapi.c	netlabel: cope with NULL catmap	2020-05-12 18:12:40 -07:00
netlabel_mgmt.c	netlabel: Fix memory leak in netlbl_mgmt_add_common	2021-07-14 16:56:22 +02:00
netlabel_mgmt.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
netlabel_unlabeled.c	netlabel: fix an uninitialized warning in netlbl_unlabel_staticlist()	2020-11-14 12:07:57 -08:00
netlabel_unlabeled.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
netlabel_user.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00
netlabel_user.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13	2019-05-21 11:28:45 +02:00