In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: L2CAP: validate frame length before control and FCS access<\/p>\n
l2cap_data_rcv() unpacks either a two-byte or four-byte control field
\nwithout first ensuring that it is present. A short ERTM or streaming-mode
\nframe can therefore cause an out-of-bounds read.<\/p>\n
There is a second short-frame case when CRC16 is enabled. After the
\ncontrol field is pulled, l2cap_check_fcs() subtracts two from skb->len
\nwithout checking it. If fewer than two bytes remain, the subtraction
\nwraps; skb_trim() leaves the buffer unchanged and the subsequent FCS
\nload reads past the logical end of the frame.<\/p>\n
Validate that the frame contains both its control field and, when
\nenabled, its FCS before either field is accessed.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: L2CAP: validate frame length before control and FCS access<\/p>\n
l2cap_data_rcv() unpacks either a two-byte or four-byte cont<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-40929","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/40929","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=40929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=40929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=40929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}