In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
rbd: Reset positive result codes to zero in object map update path<\/p>\n
In a reply message to an RBD request, a positive result code indicates
\na data payload, which is not allowed for writes. While
\nrbd_osd_req_callback() already resets a positive result code for writes
\nto zero, rbd_object_map_callback() does not. This allows a corrupted
\nreply to an object map update to trigger the rbd_assert(*result
\n__rbd_obj_handle_request() and passes this positive result code. From
\n__rbd_obj_handle_request(), rbd_obj_advance_write() is called, which
\nleaves the positive result code unchanged and returns true. Therefore,
\nthe if(done && *result) branch is executed in __rbd_obj_handle_request()
\nand the assertion triggers.<\/p>\n
This patch fixes the issue by adjusting the logic in the
\nrbd_object_map_callback() path. A positive result code for an object map
\nupdate is now reset to zero (similar to rbd_osd_req_callback()), and the
\nmessage is subsequently handled the same way as if the result code was
\nzero from the beginning. Additionally, a WARN_ON_ONCE() is added for
\nthis case.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
rbd: Reset positive result codes to zero in object map update path<\/p>\n
In a reply message to an RBD request, a positive result code in<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-5342","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/5342","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=5342"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5342"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5342"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}