In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ksmbd: Do not skip lock checks for single-byte ranges<\/p>\n
check_lock_range() uses inclusive ranges. Its callers pass the end
\noffset as start + length – 1, so start == end represents a valid
\nsingle-byte range rather than an empty range.<\/p>\n
The start == end shortcut therefore skips mandatory byte-range lock
\nchecks for one-byte reads, writes, copychunk operations and one-byte
\ntruncate ranges. A conflicting lock covering that byte is not checked
\nand the operation is allowed to proceed.<\/p>\n
Remove the shortcut. The truncate size == inode->i_size case is already
\nhandled by only calling check_lock_range() when the new size differs
\nfrom the current file size.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
ksmbd: Do not skip lock checks for single-byte ranges<\/p>\n
check_lock_range() uses inclusive ranges. Its callers pass the end
\noffset as<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25585","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25585","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=25585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}