In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
accel\/amdxdna: Fix use-after-free in amdxdna_gem_dmabuf_mmap()<\/p>\n
When vm_insert_pages() fails, the error path calls vma->vm_ops->close(vma)
\nwhich internally calls drm_gem_vm_close() \u2192 drm_gem_object_put(),
\nreleasing the GEM object reference acquired at the start of the function.
\nHowever, the close_vma label then falls through to put_obj, which calls
\ndrm_gem_object_put() a second time on the same object.<\/p>\n
If the first put releases the last reference, the object is freed and the
\nsecond put accesses freed memory, causing a use-after-free.<\/p>\n
Fix by returning directly from close_vma instead of falling through to
\nput_obj, since the close handler already performs all necessary cleanup
\nincluding the object put.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
accel\/amdxdna: Fix use-after-free in amdxdna_gem_dmabuf_mmap()<\/p>\n
When vm_insert_pages() fails, the error path calls vma->vm_ops->clo<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-6767","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/6767","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=6767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6767"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}