{"id":"CVE-2026-72093","summary":"accel/amdxdna: Fix use-after-free in amdxdna_gem_dmabuf_mmap()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\naccel/amdxdna: Fix use-after-free in amdxdna_gem_dmabuf_mmap()\n\nWhen vm_insert_pages() fails, the error path calls vma-\u003evm_ops-\u003eclose(vma)\nwhich internally calls drm_gem_vm_close() → 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.\n\nIf the first put releases the last reference, the object is freed and the\nsecond put accesses freed memory, causing a use-after-free.\n\nFix 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.","modified":"2026-08-18T03:56:37.267410714Z","published":"2026-08-15T05:52:39.865Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72093.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/4e370b5289624f46a356dcc94f9f87025eaa6036"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5da885c39baa70f570a8be35a78e85a351f33918"},{"type":"WEB","url":"https://git.kernel.org/stable/c/63bbf9ac5dde2ba85e7b39d0a0b7d540e6252ba4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72093.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72093"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e486147c912f653ef4b60a6c7dbd4168a4c56a9f"},{"fixed":"4e370b5289624f46a356dcc94f9f87025eaa6036"},{"fixed":"5da885c39baa70f570a8be35a78e85a351f33918"},{"fixed":"63bbf9ac5dde2ba85e7b39d0a0b7d540e6252ba4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72093.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.16.0"},{"fixed":"6.18.40"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.1.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72093.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}