In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dmaengine: pxa: fix double counting of the hw descriptors<\/p>\n
pxad_alloc_desc() was converted from<\/p>\n
kzalloc(struct_size(sw_desc, hw_desc, nb_hw_desc), GFP_NOWAIT)<\/p>\n
to kzalloc_flex(), which sets the __counted_by() counter sw_desc->nb_desc
\nitself – but only where the compiler has __builtin_counted_by_ref(), so
\nfrom gcc 15.1 or clang 22.1 on. The loop below it still increments
\nnb_desc, which makes it come out doubled there and correct elsewhere.<\/p>\n
nb_desc is what pxad_free_desc() iterates over and what
\nset_updater_desc() indexes from, so set it explicitly and drop the
\nincrement. The error path has to lower it to the number of descriptors
\nallocated so far, otherwise pxad_free_desc() would free entries that were
\nnever allocated.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dmaengine: pxa: fix double counting of the hw descriptors<\/p>\n
pxad_alloc_desc() was converted from<\/p>\n
kzalloc(struct_size(sw_des<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-33393","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/33393","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=33393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=33393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=33393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}