In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
smb: client: fix server->total_read for compound encrypted PDUs<\/p>\n
In receive_encrypted_standard(), server->total_read is left at the
\nfull decrypted frame size when walking sub-PDUs of a compound encrypted
\nframe. As a result, cifs_handle_standard() passes this full size
\nto smb2_check_message(), causing the PDU length guards to incorrectly
\nvalidate the entire compound frame instead of the current sub-PDU.<\/p>\n
This allows truncated non-last sub-PDUs to bypass length validation,
\nleading to out-of-bounds reads in smb2_get_data_area_len().<\/p>\n
Fix this by setting server->total_read to the true length of the
\ncurrent sub-PDU: next_cmd for non-last sub-PDUs, and the remaining
\npdu_length for the last one.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
smb: client: fix server->total_read for compound encrypted PDUs<\/p>\n
In receive_encrypted_standard(), server->total_read is left at the<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-33236","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/33236","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=33236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=33236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=33236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}