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CVE PROGRAM SOURCE RECORDUnscored

CVE-2021-47003

dmaengine: idxd: Fix potential null dereference on pointer status

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix potential null dereference on pointer status There are calls to idxd_cmd_exec that pass a null status pointer however a recent commit has added an assignment to *status that can end up with a null pointer dereference. The function expects a null status pointer sometimes as there is a later assignment to *status where status is first null checked. Fix the issue by null checking status before making the assignment. Addresses-Coverity: ("Explicit null dereferenced")

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

  • 40e3b5c128645d2ddad12310c7be98758cafb2b0 to < 5756f757c72501ef1a16f5f63f940623044180e9affected
  • 89e3becd8f821e507052e012d2559dcda59f538e to < 2280b4cc29d8cdd2be3d1b2d1ea4f958e2131c97affected
  • 89e3becd8f821e507052e012d2559dcda59f538e to < 7bc402f843e7817a4a808e7b9ab0bcd7ffd55bfaaffected
  • 89e3becd8f821e507052e012d2559dcda59f538e to < 28ac8e03c43dfc6a703aa420d18222540b801120affected
  • 5.10.17 to < 5.10.38affected

Linux Linux

Default version status: affected

  • 5.11affected
  • 0 to < 5.11unaffected
  • 5.10.38 to ≤ 5.10.*unaffected
  • 5.11.22 to ≤ 5.11.*unaffected
  • 5.12.5 to ≤ 5.12.*unaffected
  • 5.13 to ≤ *unaffected

References