In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
nfc: llcp: read llcp_sock->local under the socket lock in getsockopt<\/p>\n
nfc_llcp_getsockopt() read llcp_sock->local before lock_sock(sk) and
\nthen dereferenced the cached pointer inside the locked region.
\nllcp_sock_bind() assigns and clears llcp_sock->local under the same
\nsocket lock, dropping the last reference on its error path. A
\ngetsockopt() racing an in-flight bind() can observe the pointer, block
\non lock_sock(), and then dereference a freed nfc_llcp_local once bind()
\nhas unwound.<\/p>\n
Move the llcp_sock->local read and the NULL check inside the
\nlock_sock(sk) region so bind() cannot mutate or free the pointer between
\nthe load and the use.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
nfc: llcp: read llcp_sock->local under the socket lock in getsockopt<\/p>\n
nfc_llcp_getsockopt() read llcp_sock->local before lock_sock(<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25634","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25634","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=25634"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25634"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}