In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
cxl\/features: Reject Set Features output buffer smaller than the header<\/p>\n
cxlctl_set_feature() sizes its output buffer from the user’s
\nfwctl_rpc.out_len but never checks it is large enough to hold even the
\nfwctl_rpc_cxl_out header. With out_len == 0 , kvzalloc() returns
\nZERO_SIZE_PTR, which passes the !rpc_out check, the subsequent
\nrpc_out->size = 0 then writes through the poison pointer.<\/p>\n
Reject requests whose output buffer can’t hold the response header,
\nbefore allocating. The Set Feature reply carries no payload, so the
\nheader is all that is required.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
cxl\/features: Reject Set Features output buffer smaller than the header<\/p>\n
cxlctl_set_feature() sizes its output buffer from the user<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25937","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25937","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=25937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}