In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
drm\/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()<\/p>\n
The vm pointer returned from amdgpu_vm_get_vm_from_pasid() is only
\nvalid while the lock is still being held. Once xa_unlock_irqrestore is
\ncalled and returned, the pointer is no longer under lock and is subject
\nto modification. Since, the caller still dereferences vm->task_info in
\namdgpu_vm_get_task_info_vm() after the lock is removed, this causes a
\nuse after unlock problem.<\/p>\n
Remove the lifetime issue present in amdgpu_vm_get_task_info_pasid()
\nthrough removing the amdgpu_vm_get_vm_from_pasid() function from
\namdgpu_vm.c and making the relevant code inline to hold the lock while
\nit is still in use.<\/p>\n
(cherry picked from commit 9d01579f3f868b333acc901815972685989092c7)<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
drm\/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()<\/p>\n
The vm pointer returned from amdgpu_vm_get_vm_from_pasid() is on<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-5395","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/5395","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=5395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}