In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
drm\/amd\/display: Fix divide-by-zero in calculate_mcache_setting on zero viewport<\/p>\n
If a plane reaches calculate_mcache_setting with a zero-area viewport,
\ncalculate_mcache_setting exits early with num_mcaches == 0 and
\nmvmpg_width\/height == 0. This will cause a divide-by-zero panic and can
\nalso cause an underflow on num_mcaches.<\/p>\n
Fix this by changing calculate_mcache_setting to bool and adding guards
\nafter each calculate_mcache_row_bytes call. If num_mcaches or
\nmvmpg_width\/height is zero, return a false. Callers will propagate the
\nfailure as a rejected mode, which prevents the panic.<\/p>\n
(cherry picked from commit 29c0f7c655f47bcbd575ff75e58480df6ec3c9da)<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
drm\/amd\/display: Fix divide-by-zero in calculate_mcache_setting on zero viewport<\/p>\n
If a plane reaches calculate_mcache_setting with <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-7434","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/7434","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=7434"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7434"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7434"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}