In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
netfilter: nft_set_pipapo: don’t leak bad clone into future transaction<\/p>\n
On memory allocation failure the cloned nft_pipapo_match can enter a bad
\nstate:
\n – some fields can have their lookup tables resized while others did
\n not
\n – bits might have been toggled
\n – scratch map can be undersized which also means m->bsize_max can be
\n lower than what is required<\/p>\n
This means that the next insertion in the same batch can trigger
\nout-of-bounds writes.<\/p>\n
Furthermore, a failure in the first can result in the bad clone to
\nleak into the next transaction because the abort callback is never
\nexecuted in this case (the upper layer saw an error and no attempt to
\nallocate a transactional request was made).<\/p>\n
Record a state for the nft_pipapo_match structure:
\n– NEW (pristine clone)
\n– MOD (modified clone with good state)
\n– ERR (potentially bogus content)<\/p>\n
Then make it so that deletes and insertions fail when the clone
\nentered ERR state.<\/p>\n
In case the very first insert attempt results in an error, free the
\nclone right away.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
netfilter: nft_set_pipapo: don’t leak bad clone into future transaction<\/p>\n
On memory allocation failure the cloned nft_pipapo_match c<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6875","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6875","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=6875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6875"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}