In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
drm\/amdkfd: fix uint32_t overflow in EOP ring buffer size alignment<\/p>\n
eop_ring_buffer_size in struct queue_properties is a u32. In
\nkfd_queue_acquire_buffers() the expected EOP buffer size is computed as
\nALIGN(eop_ring_buffer_size, PAGE_SIZE); ALIGN uses typeof(x), so the
\naddition is done in 32-bit. A user-supplied size of 0xFFFFF001 wraps to
\n0, causing kfd_queue_buffer_get() to skip its exact-size check (gated on
\nsize != 0) and accept any BO mapped at the address. On GFX8\/GFX9 the MQD
\ncp_hqd_eop_control is then programmed for an 8KB EOP ring backed by a 4KB
\nBO, so CP EOP writes can land past the buffer and fault the GPU.<\/p>\n
Cast the operand to u64 so the alignment is computed in 64-bit; the size
\ncheck in kfd_queue_buffer_get() then rejects the oversized request.<\/p>\n
(cherry picked from commit ae443117b742c357bfef3a7bddabf76fcf86e9ef)<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
drm\/amdkfd: fix uint32_t overflow in EOP ring buffer size alignment<\/p>\n
eop_ring_buffer_size in struct queue_properties is a u32. In
\nk<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-7432","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/7432","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=7432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}