In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net\/af_iucv: fix NULL deref in afiucv_hs_callback_syn()<\/p>\n
afiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC.
\nIf the allocation fails, nsk is NULL.<\/p>\n
The connection-refused path is entered when the listen state check
\nfails, the accept backlog is full, or nsk is NULL. The code
\nunconditionally calls iucv_sock_kill(nsk) in that path.<\/p>\n
iucv_sock_kill() does not accept a NULL socket pointer and immediately
\ndereferences sk via sock_flag(sk, SOCK_ZAPPED). When nsk is NULL,
\ncalling iucv_sock_kill(nsk) results in a NULL pointer dereference.<\/p>\n
Only call iucv_sock_kill() when a child socket was successfully
\nallocated.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net\/af_iucv: fix NULL deref in afiucv_hs_callback_syn()<\/p>\n
afiucv_hs_callback_syn() allocates the child socket with GFP_ATOMIC.
\nIf th<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-5348","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/5348","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5348"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5348"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5348"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}