In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dmaengine: mmp_pdma: fix wrong sg length in mmp_pdma_prep_slave_sg()<\/p>\n
In mmp_pdma_prep_slave_sg(), for_each_sg() iterates the scatterlist
\nputting each entry into ‘sg’, but the entry length is read from ‘sgl’
\n(the list head) instead of ‘sg’ (the current entry):<\/p>\n
for_each_sg(sgl, sg, sg_len, i) {
\n addr = sg_dma_address(sg);
\n avail = sg_dma_len(sgl); \/* should be ‘sg’ *\/<\/p>\n
Consequently ‘avail’ is always the length of the first entry. For
\nmulti-sg lists this causes out-of-bounds reads when a later entry is
\nshorter than the first, and silent data loss when it is longer.
\nSingle-sg or uniformly-sized lists happen to mask the issue.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dmaengine: mmp_pdma: fix wrong sg length in mmp_pdma_prep_slave_sg()<\/p>\n
In mmp_pdma_prep_slave_sg(), for_each_sg() iterates the scatt<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-33367","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/33367","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=33367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=33367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=33367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}