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CVE-2026-72093— accel/amdxdna: Fix use-after-free in amdxdna_gem_dmabuf_mmap()

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 6.16版本存在安全漏洞，该漏洞源于amdxdna_gem_dmabuf_mmap()中错误处理不当，导致对同一GEM对象重复调用drm_gem_object_put()，可能造成释放后重用。

CVSS 7.8 · High EPSS 0.17% · P7

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux e486147c912f653ef4b60a6c7dbd4168a4c56a9f< 4e370b5289624f46a356dcc94f9f87025eaa6036 affected
e486147c912f653ef4b60a6c7dbd4168a4c56a9f< 5da885c39baa70f570a8be35a78e85a351f33918 affected
e486147c912f653ef4b60a6c7dbd4168a4c56a9f< 63bbf9ac5dde2ba85e7b39d0a0b7d540e6252ba4 affected
6.16 affected
< 6.16 unaffected
6.18.40≤ 6.18.* unaffected
7.1.5≤ 7.1.* unaffected
7.2≤ * unaffected
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I. Basic Information for CVE-2026-72093

Vulnerability Information
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Vulnerability Title
accel/amdxdna: Fix use-after-free in amdxdna_gem_dmabuf_mmap()
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 6.16版本存在安全漏洞，该漏洞源于amdxdna_gem_dmabuf_mmap()中错误处理不当，导致对同一GEM对象重复调用drm_gem_object_put()，可能造成释放后重用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux e486147c912f653ef4b60a6c7dbd4168a4c56a9f ~ 4e370b5289624f46a356dcc94f9f87025eaa6036 -
Linux Linux 6.16 -

II. Public POCs for CVE-2026-72093

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III. Intelligence Information for CVE-2026-72093

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Patches & Fixes for CVE-2026-72093 (3)

Same Patch Batch · Linux · 2026-08-15 · 845 CVEs total

CVE-2026-74475 10.0 CRITICAL vxlan: use neigh_ha_snapshot() in route_shortcircuit()
CVE-2026-74280 10.0 CRITICAL crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
CVE-2026-72407 10.0 CRITICAL geneve: validate inner network offset in geneve_gro_complete()
CVE-2026-72408 10.0 CRITICAL geneve: gate GRO hint in geneve_gro_complete() on gs->gro_hint
CVE-2026-72421 10.0 CRITICAL ipv4: fib: Don't ignore error route in local/main tables.
CVE-2026-74309 10.0 CRITICAL vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
CVE-2026-74279 10.0 CRITICAL crypto: cavium/cpt - fix DMA cleanup using wrong loop index
CVE-2026-72493 9.9 CRITICAL net: serialize netif_running() check in enqueue_to_backlog()
CVE-2026-72381 9.8 CRITICAL ksmbd: fix use-after-free of fp->owner.name in durable handle owner check
CVE-2026-72393 9.8 CRITICAL eth: fbnic: don't cache shinfo across skb realloc
CVE-2026-74401 9.8 CRITICAL dlm: fix add msg handle in send_queue ordered
CVE-2026-74406 9.8 CRITICAL vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().
CVE-2026-72355 9.8 CRITICAL netfs: Fix barriering when walking subrequest list
CVE-2026-72339 9.8 CRITICAL qede: fix off-by-one in BD ring consumption on build_skb failure
CVE-2026-72211 9.8 CRITICAL ntfs: grow index root value before reparent header update
CVE-2026-72194 9.8 CRITICAL fs/ntfs3: add depth limit to indx_find_buffer to prevent stack overflow
CVE-2026-72351 9.8 CRITICAL gue: validate REMCSUM private option length
CVE-2026-72366 9.8 CRITICAL netfs: Fix netfs_create_write_req() to handle async cache object creation
CVE-2026-72098 9.8 CRITICAL dm-verity: fix buffer overflow in FEC calculation
CVE-2026-72083 9.8 CRITICAL scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE

Showing top 20 of 845 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-72093

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