In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dm-integrity: replace forgeable discard filler with a keyed sector marker<\/p>\n
The discard-block check in dm_integrity_rw_tag() treats a stored tag
\nof all 0xf6 bytes (DISCARD_FILLER) as proof a block was discarded and
\nskips HMAC verification. allow_discards is only accepted in
\ndm-integrity’s standalone mode. An attacker with raw write access to
\nthe backing device, but without the integrity key, can stamp any block
\nwith an all-0xf6 tag and have it served as authentic.<\/p>\n
Add a new “allow_discards_keyed” target argument that marks discarded
\nblocks with a keyed checksum of (salt || sector) instead, computed by
\nintegrity_discard_checksum().<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dm-integrity: replace forgeable discard filler with a keyed sector marker<\/p>\n
The discard-block check in dm_integrity_rw_tag() treats <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25742","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25742","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=25742"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25742"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25742"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}