In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dmaengine: tegra: Fix burst size calculation<\/p>\n
Currently, the Tegra GPC DMA hardware requires the transfer length to
\nbe a multiple of the max burst size configured for the channel. When a
\nclient requests a transfer where the length is not evenly divisible by
\nthe configured max burst size, the DMA hangs with partial burst at
\nthe end.<\/p>\n
Fix this by reducing the burst size to the largest power-of-2 value
\nthat evenly divides the transfer length. For example, a 40-byte
\ntransfer with a 16-byte max burst will now use an 8-byte burst
\n(40 \/ 8 = 5 complete bursts) instead of causing a hang.<\/p>\n
This issue was observed with the PL011 UART driver where TX DMA
\ntransfers of arbitrary lengths were stuck.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
dmaengine: tegra: Fix burst size calculation<\/p>\n
Currently, the Tegra GPC DMA hardware requires the transfer length to
\nbe a multiple o<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6806","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6806","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=6806"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6806"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}