In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: MGMT: validate Add Extended Advertising Data length<\/p>\n
MGMT_OP_ADD_EXT_ADV_DATA is registered as a variable-length command,
\nwith MGMT_ADD_EXT_ADV_DATA_SIZE as the fixed header size. The handler
\nthen uses cp->adv_data_len and cp->scan_rsp_len to validate and copy
\ncp->data, but it never checks that those bytes are part of the mgmt
\ncommand payload.<\/p>\n
A short command can therefore make add_ext_adv_data() pass an
\nout-of-bounds pointer into tlv_data_is_valid(). If the bytes beyond
\nthe command buffer are addressable, they can also be copied into the
\nadvertising instance as scan response data, where the caller can read
\nthem back via MGMT_OP_GET_ADV_INSTANCE. The trigger requires
\nCAP_NET_ADMIN in the initial user namespace; KASAN reports an 8-byte
\nslab-out-of-bounds read.<\/p>\n
Reject commands whose length does not match the fixed header plus both
\nadvertising data lengths before parsing cp->data.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: MGMT: validate Add Extended Advertising Data length<\/p>\n
MGMT_OP_ADD_EXT_ADV_DATA is registered as a variable-length command<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-15093","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/15093","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=15093"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15093"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15093"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}