In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
xfrm: fix xfrm_state_construct() auth-trunc leak<\/p>\n
attach_auth_trunc() can allocate x->aalg while leaving
\nx->props.aalgo at zero when the selected auth algorithm has no
\nsadb_alg_id. One real case is cmac(aes).<\/p>\n
xfrm_state_construct() then treats !x->props.aalgo as “no auth
\nalgorithm attached yet” and calls attach_auth(). That overwrites
\nx->aalg and loses the first allocation. Any later failure or teardown
\nonly frees the replacement pointer.<\/p>\n
Check whether x->aalg is already attached instead of inferring that
\nstate from x->props.aalgo.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
xfrm: fix xfrm_state_construct() auth-trunc leak<\/p>\n
attach_auth_trunc() can allocate x->aalg while leaving
\nx->props.aalgo at zero whe<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-17347","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/17347","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=17347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}