In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: eir: Fix OOB read in eir_get_service_data()<\/p>\n
eir_get_service_data() walks the advertising data for a Service Data
\nfield with a matching UUID. On a mismatch it advances:<\/p>\n
eir += dlen;
\n eir_len -= dlen;<\/p>\n
eir_get_data() reports dlen as the field’s data length, but the field
\nspans dlen + 2 bytes once its length and type bytes count, and more
\nwhen non-Service-Data fields were skipped to reach it. The pointer
\nlands correctly on the next field. eir_len does not, and the shortfall
\ncompounds across fields until eir_get_data() reads the length and type
\nbytes of a “field” past the end of the buffer.<\/p>\n
For an ISO broadcast sink that buffer is hcon->le_per_adv_data[], filled
\nfrom the periodic advertising reports of a remote broadcaster. A PA
\npayload packed with mismatching Service Data fields walks off the array
\ninto the rest of struct hci_conn. A drifted field that matches the BAA
\nUUID puts those bytes in iso_pi(sk)->base, where user space reads them
\nback with getsockopt(BT_ISO_BASE).<\/p>\n
Recompute eir_len from the end of the buffer each iteration.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
Bluetooth: eir: Fix OOB read in eir_get_service_data()<\/p>\n
eir_get_service_data() walks the advertising data for a Service Data
\nfield <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21505","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21505","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=21505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}