In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()<\/p>\n
qrtr_endpoint_post() validates an incoming packet with<\/p>\n
\tif (!size || len != ALIGN(size, 4) + hdrlen)
\n\t\tgoto err;<\/p>\n
where size comes from the wire. On 32-bit, size_t is 32 bits and
\nALIGN(size, 4) wraps to 0 for size >= 0xfffffffd, so the check
\npasses and skb_put_data(skb, data + hdrlen, size) writes past the
\nhdrlen-sized skb and oopses the kernel. 64-bit is unaffected.<\/p>\n
This is the 32-bit residual of ad9d24c9429e2 (“net: qrtr: fix OOB
\nRead in qrtr_endpoint_post”), which fixed only the 64-bit case.<\/p>\n
Reject any size that cannot fit the buffer before the ALIGN.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()<\/p>\n
qrtr_endpoint_post() validates an incoming packet with<\/p>\n
\tif (!size <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6921","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6921","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=6921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}