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CVE PROGRAM SOURCE RECORDUnscored

CVE-2026-31399

nvdimm/bus: Fix potential use after free in asynchronous initialization

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: nvdimm/bus: Fix potential use after free in asynchronous initialization Dingisoul with KASAN reports a use after free if device_add() fails in nd_async_device_register(). Commit b6eae0f61db2 ("libnvdimm: Hold reference on parent while scheduling async init") correctly added a reference on the parent device to be held until asynchronous initialization was complete. However, if device_add() results in an allocation failure the ref count of the device drops to 0 prior to the parent pointer being accessed. Thus resulting in use after free. The bug bot AI correctly identified the fix. Save a reference to the parent pointer to be used to drop the parent reference regardless of the outcome of device_add().

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • b6eae0f61db27748606cc00dafcfd1e2c032f0a5 to < 6fc36c2a925ceaba203eb13d75a8f0879a2c121baffected
  • b6eae0f61db27748606cc00dafcfd1e2c032f0a5 to < a36cf138500e56f50db9f9a33222df6969b38326affected
  • b6eae0f61db27748606cc00dafcfd1e2c032f0a5 to < 9a0fb16ba5b372465a3a1ecd761c6fa911a4ab4daffected
  • b6eae0f61db27748606cc00dafcfd1e2c032f0a5 to < e48bf8f1d2b12c1c5ba1f609edbd4cde5dadc20eaffected
  • b6eae0f61db27748606cc00dafcfd1e2c032f0a5 to < 2c638259ad750833fd46a0cf57672a618542d84caffected
  • b6eae0f61db27748606cc00dafcfd1e2c032f0a5 to < a226e5b49e5fe8c98b14f8507de670189d191348affected
  • b6eae0f61db27748606cc00dafcfd1e2c032f0a5 to < 84af19855d1abdee3c9d57c0684e2868e391793caffected
  • b6eae0f61db27748606cc00dafcfd1e2c032f0a5 to < a8aec14230322ed8f1e8042b6d656c1631d41163affected
  • 8954771abdea5c34280870e35592c7226a816d95affected
  • 3e63a7f25cc85d3d3e174b9b0e3489ebb7eaf4abaffected
  • 1490de2bb0836fc0631c04d0559fdf81545b672faffected
  • e31a8418c8df7e6771414f99ed3d95ba8aca4e05affected
  • 4f1a55a4f990016406147cf3e0c9487bf83e50f0affected
  • 4.4.164 to < 4.5affected
  • 4.9.137 to < 4.10affected
  • 4.14.81 to < 4.15affected
  • 4.18.19 to < 4.19affected
  • 4.19.2 to < 4.20affected

Linux Linux

Default version status: affected

  • 4.20affected
  • 0 to < 4.20unaffected
  • 5.10.253 to ≤ 5.10.*unaffected
  • 5.15.203 to ≤ 5.15.*unaffected
  • 6.1.167 to ≤ 6.1.*unaffected
  • 6.6.130 to ≤ 6.6.*unaffected
  • 6.12.78 to ≤ 6.12.*unaffected
  • 6.18.20 to ≤ 6.18.*unaffected
  • 6.19.10 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References