In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dm era: fix out-of-bounds memory access for non-zero start sector<\/p>\n
dm-era tracks writes in target-relative blocks, but era_map() calculates
\nthe writeset block before applying the target offset. Tables with a
\nnon-zero start sector can therefore pass an absolute mapped-device block
\nto metadata_current_marked().<\/p>\n
If the absolute block is beyond the current writeset size,
\nwriteset_marked() tests past the end of the in-core bitset. KASAN reports
\nthis as a vmalloc-out-of-bounds access.<\/p>\n
Apply the target offset before calculating the era block so writeset
\nlookups use the target-relative block number.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dm era: fix out-of-bounds memory access for non-zero start sector<\/p>\n
dm-era tracks writes in target-relative blocks, but era_map() ca<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6775","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6775","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=6775"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6775"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}