CVE-2026-72093
accel/amdxdna: Fix use-after-free in amdxdna_gem_dmabuf_mmap()
Description
In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix use-after-free in amdxdna_gem_dmabuf_mmap() When vm_insert_pages() fails, the error path calls vma->vm_ops->close(vma) which internally calls drm_gem_vm_close() → drm_gem_object_put(), releasing the GEM object reference acquired at the start of the function. However, the close_vma label then falls through to put_obj, which calls drm_gem_object_put() a second time on the same object. If the first put releases the last reference, the object is freed and the second put accesses freed memory, causing a use-after-free. Fix by returning directly from close_vma instead of falling through to put_obj, since the close handler already performs all necessary cleanup including the object put.
INFO
Published Date :
Aug. 15, 2026, 6:21 a.m.
Last Modified :
Aug. 17, 2026, 6:18 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Apply the kernel patch for the AMD DNA driver.
- Update the Linux kernel to a patched version.
- Ensure proper error handling in memory mapping operations.
- Review GEM object reference counting logic.
References to Advisories, Solutions, and Tools
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CVE-2026-72093.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72093 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
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stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72093
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-72093 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72093 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 17, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e486147c912f653ef4b60a6c7dbd4168a4c56a9f', 'lessThan': '4e370b5289624f46a356dcc94f9f87025eaa6036', 'versionType': 'git'}, {'status': 'affected', 'version': 'e486147c912f653ef4b60a6c7dbd4168a4c56a9f', 'lessThan': '5da885c39baa70f570a8be35a78e85a351f33918', 'versionType': 'git'}, {'status': 'affected', 'version': 'e486147c912f653ef4b60a6c7dbd4168a4c56a9f', 'lessThan': '63bbf9ac5dde2ba85e7b39d0a0b7d540e6252ba4', 'versionType': 'git'}], 'programFiles': ['drivers/accel/amdxdna/amdxdna_gem.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/accel/amdxdna/amdxdna_gem.c'], 'defaultStatus': 'affected'}] [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e486147c912f653ef4b60a6c7dbd4168a4c56a9f', 'lessThan': '4e370b5289624f46a356dcc94f9f87025eaa6036', 'versionType': 'git'}, {'status': 'affected', 'version': 'e486147c912f653ef4b60a6c7dbd4168a4c56a9f', 'lessThan': '5da885c39baa70f570a8be35a78e85a351f33918', 'versionType': 'git'}, {'status': 'affected', 'version': 'e486147c912f653ef4b60a6c7dbd4168a4c56a9f', 'lessThan': '63bbf9ac5dde2ba85e7b39d0a0b7d540e6252ba4', 'versionType': 'git'}], 'programFiles': ['drivers/accel/amdxdna/amdxdna_gem.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/accel/amdxdna/amdxdna_gem.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 15, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': 'e486147c912f653ef4b60a6c7dbd4168a4c56a9f', 'lessThan': '4e370b5289624f46a356dcc94f9f87025eaa6036', 'versionType': 'git'}, {'status': 'affected', 'version': 'e486147c912f653ef4b60a6c7dbd4168a4c56a9f', 'lessThan': '5da885c39baa70f570a8be35a78e85a351f33918', 'versionType': 'git'}, {'status': 'affected', 'version': 'e486147c912f653ef4b60a6c7dbd4168a4c56a9f', 'lessThan': '63bbf9ac5dde2ba85e7b39d0a0b7d540e6252ba4', 'versionType': 'git'}], 'programFiles': ['drivers/accel/amdxdna/amdxdna_gem.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.16'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.16', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.18.40', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.5', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc3', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/accel/amdxdna/amdxdna_gem.c'], 'defaultStatus': 'affected'}] Added Description In the Linux kernel, the following vulnerability has been resolved: accel/amdxdna: Fix use-after-free in amdxdna_gem_dmabuf_mmap() When vm_insert_pages() fails, the error path calls vma->vm_ops->close(vma) which internally calls drm_gem_vm_close() → drm_gem_object_put(), releasing the GEM object reference acquired at the start of the function. However, the close_vma label then falls through to put_obj, which calls drm_gem_object_put() a second time on the same object. If the first put releases the last reference, the object is freed and the second put accesses freed memory, causing a use-after-free. Fix by returning directly from close_vma instead of falling through to put_obj, since the close handler already performs all necessary cleanup including the object put. Added Reference https://git.kernel.org/stable/c/4e370b5289624f46a356dcc94f9f87025eaa6036 Added Reference https://git.kernel.org/stable/c/5da885c39baa70f570a8be35a78e85a351f33918 Added Reference https://git.kernel.org/stable/c/63bbf9ac5dde2ba85e7b39d0a0b7d540e6252ba4