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linux/security/selinux
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Ondrej Mosnacek dc27f3c5d1 selinux: fix NULL-pointer dereference when hashtab allocation fails 
When the hash table slot array allocation fails in hashtab_init(),
h->size is left initialized with a non-zero value, but the h->htable
pointer is NULL. This may then cause a NULL pointer dereference, since
the policydb code relies on the assumption that even after a failed
hashtab_init(), hashtab_map() and hashtab_destroy() can be safely called
on it. Yet, these detect an empty hashtab only by looking at the size.

Fix this by making sure that hashtab_init() always leaves behind a valid
empty hashtab when the allocation fails.

Cc: stable@vger.kernel.org
Fixes: 03414a49ad ("selinux: do not allocate hashtabs dynamically")
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2021-11-19 16:11:39 -05:00
..
include security: pass asoc to sctp_assoc_request and sctp_sk_clone 2021-11-03 11:09:20 +00:00
ss selinux: fix NULL-pointer dereference when hashtab allocation fails 2021-11-19 16:11:39 -05:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
avc.c selinux: fix all of the W=1 build warnings 2021-10-13 16:31:51 -04:00
hooks.c net,lsm,selinux: revert the security_sctp_assoc_established() hook 2021-11-12 12:07:02 -05:00
ibpkey.c selinux: remove unused global variables 2021-01-12 09:49:01 -05:00
ima.c ima: Add digest and digest_len params to the functions to measure a buffer 2021-07-23 09:27:02 -04:00
Kconfig Documentation,selinux: deprecate setting checkreqprot to 1 2020-02-10 10:49:01 -05:00
Makefile selinux: include a consumer of the new IMA critical data hook 2021-01-14 23:41:46 -05:00
netif.c selinux: remove unused global variables 2021-01-12 09:49:01 -05:00
netlabel.c security: pass asoc to sctp_assoc_request and sctp_sk_clone 2021-11-03 11:09:20 +00:00
netlink.c selinux: mark some global variables __ro_after_init 2021-01-12 10:08:55 -05:00
netnode.c selinux: remove unused global variables 2021-01-12 09:49:01 -05:00
netport.c selinux: fix all of the W=1 build warnings 2021-10-13 16:31:51 -04:00
nlmsgtab.c include/uapi/linux/xfrm.h: Fix XFRM_MSG_MAPPING ABI breakage 2021-09-14 10:31:35 +02:00
selinuxfs.c selinux/stable-5.13 PR 20210426 2021-04-27 13:42:11 -07:00
status.c selinux: move status variables out of selinux_ss 2020-02-10 10:49:01 -05:00
xfrm.c selinux: delete selinux_xfrm_policy_lookup() useless argument 2021-05-10 21:38:31 -04:00