CVE-2026-43370: drm/amdgpu: Fix use-after-free race in VM acquire

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• linux linux kernel4.17 and later · before 5.10.253
• linux linux kernel5.11 and later · before 5.15.203
• linux linux kernel5.16 and later · before 6.1.167
• linux linux kernel6.2 and later · before 6.6.130
• linux linux kernel6.7 and later · before 6.12.78
• linux linux kernel6.13 and later · before 6.18.19
• linux linux kernel6.19 and later · before 6.19.9
• linux linux kernel7.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

• Linux Linux

  • 4.17affected
  • ede0dd86f45adf2b7083bb161f6bc81da5fe2bad and later · before ae87aea330c24f462fc7058ed543ba8bc6798447affected · git
  • ede0dd86f45adf2b7083bb161f6bc81da5fe2bad and later · before 46d309996bd9251792d7dafdbaf615cf202b4447affected · git
  • ede0dd86f45adf2b7083bb161f6bc81da5fe2bad and later · before e61e355cbe49e585097eee28c15b862bfb1c0668affected · git
  • ede0dd86f45adf2b7083bb161f6bc81da5fe2bad and later · before c658c1c85ec235b7ecfbf8dbfee385b1332088f4affected · git
  • ede0dd86f45adf2b7083bb161f6bc81da5fe2bad and later · before 904025fa8bba1d028adade33346372b4ac1a9249affected · git
  • ede0dd86f45adf2b7083bb161f6bc81da5fe2bad and later · before 7885eb335d8f9e9942925d57e300a85e3f82ded4affected · git
  • ede0dd86f45adf2b7083bb161f6bc81da5fe2bad and later · before 94b7782d0c8024f5b88454241c8d4777076c3786affected · git
  • ede0dd86f45adf2b7083bb161f6bc81da5fe2bad and later · before 2c1030f2e84885cc58bffef6af67d5b9d2e7098faffected · git
  • before 4.17not affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Other highest-scoring records for the same primary product.

• CVE-2026-31431crypto: algif_aead - Revert to operating out-of-placeKEV
  90Now
• CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV
  89Now
• CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
  85Now

Published before and after this one in the same product

• ← EarlierCVE-2026-43366May 8, 2026 · io_uring/kbuf: check if target buffer list is still legacy on recycle
  31Monitor
• ← EarlierCVE-2026-43368May 8, 2026 · drm/i915: Fix potential overflow of shmem scatterlist length
  31Monitor
• Later →CVE-2026-43374May 8, 2026 · net: nexthop: fix percpu use-after-free in remove_nh_grp_entry
  31Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1free(dev->buf);2/* ... another thread is still running ... */3process(dev->buf);

1lock(&dev->lock);2free(dev->buf);3dev->buf = NULL;4unlock(&dev->lock);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.