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netfilter: nf_tables: NULL pointer dereference in nf_tables_updobj()
authorAlok Tiwari <alok.a.tiwari@oracle.com>
Tue, 17 Jan 2023 15:45:49 +0000 (07:45 -0800)
committerPablo Neira Ayuso <pablo@netfilter.org>
Wed, 1 Feb 2023 11:18:48 +0000 (12:18 +0100)
commitdac7f50a45216d652887fb92d6cd3b7ca7f006ea
treeece611746850a7ba772efa5dc4bc386f74fc4b8ctree | snapshot
parentdd25cfab16e6bff1bbd75b42b8334c4419c90a4fcommit | diff
netfilter: nf_tables: NULL pointer dereference in nf_tables_updobj()

static analyzer detect null pointer dereference case for 'type'
function __nft_obj_type_get() can return NULL value which require to handle
if type is NULL pointer return -ENOENT.

This is a theoretical issue, since an existing object has a type, but
better add this failsafe check.

Signed-off-by: Alok Tiwari <alok.a.tiwari@oracle.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
net/netfilter/nf_tables_api.c diff | blob | history
Domain: System / Kernel;