In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
smb: client: fix overflow in passthrough ioctl bounds check<\/p>\n
smb2_ioctl_query_info() validates the PASSTHRU_FSCTL response payload
\nbefore copying it to userspace.<\/p>\n
The payload offset and length both come from 32-bit fields. The bounds
\ncheck currently adds OutputOffset and qi.input_buffer_length directly, so
\nthe addition can wrap in 32-bit arithmetic before the result is compared
\nagainst the response buffer length.<\/p>\n
A malicious server can use a large OutputOffset and a small OutputCount
\nto make the wrapped sum pass the bounds check. The later copy_to_user()
\nthen reads from io_rsp + OutputOffset, outside the response buffer.<\/p>\n
Use size_add() for the offset plus length check so overflow is treated as
\nout of bounds.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
smb: client: fix overflow in passthrough ioctl bounds check<\/p>\n
smb2_ioctl_query_info() validates the PASSTHRU_FSCTL response payload<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6933","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6933","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=6933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}