In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: libipw: reject too-short beacon and probe responses<\/p>\n
libipw_process_probe_response() and the libipw_network_init() call it
\nmakes assume the frame contains the full 36-byte beacon and probe
\nresponse prefix, but the ipw2100 and ipw2200 receive paths only
\nestablish that a management frame carries the generic 24-byte
\nthree-address header.<\/p>\n
libipw_network_init() then computes the information element length as<\/p>\n
\tstats->len – sizeof(*beacon)<\/p>\n
stats->len is a u16 and sizeof() has type size_t, so the subtraction is
\nevaluated as size_t and wraps instead of going negative. Truncating
\nthat to the u16 length parameter of libipw_parse_info_param() yields
\n65524 for a 24-byte beacon, and the parser then walks the receive
\nbuffer as if it held almost 64 KiB of information elements, reading
\npast the allocation.<\/p>\n
Reject the frame before any fixed field is touched.<\/p>\n
Found by an AI-assisted review of length arithmetic in management frame
\nparsers. Verified with a KUnit case under Generic KASAN on arm64 under
\nQEMU; I do not have the hardware, so it is not tested on a real device.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
wifi: libipw: reject too-short beacon and probe responses<\/p>\n
libipw_process_probe_response() and the libipw_network_init() call it
\nma<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-33418","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/33418","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=33418"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=33418"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=33418"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}