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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-68419

RDMA/irdma: Prevent rereg_mr for non-mem regions

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Prevent rereg_mr for non-mem regions When a QP/CQ/SRQ is created, a two step process is used where the buffer is allocated in userspace and explicitly registered with the normal reg_mr mechanism prior to creating the actual QP/CQ/SRQ object. These special registrations are indicated via an ABI field so the driver knows that they do not have a valid mkey and to skip the actual CQP command submission. Since these are real MR objects from the core's perspective, it is possible for a user application to invoke rereg_mr on them and cause a real CQP op to be emitted with the zero-initialized mkey value of 0. Fix this by preventing rereg_mr on these special regions.

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

  • 715fdb3b30541cc8180b7cdc6aa9f8c307afdf25 to < fb46d134e1b8690bed2da9005b36d32d2efd34acaffected
  • 5ac388db27c443dadfbb0b8b23fa7ccf429d901a to < b5029e91c63406e4f4c8d58161048b41b6f0bd8caffected
  • 5ac388db27c443dadfbb0b8b23fa7ccf429d901a to < ca1c29f05274b737dc964e28b97803750d7cf7ecaffected
  • 5ac388db27c443dadfbb0b8b23fa7ccf429d901a to < dbaa37e060918c45517786e37ecab0f300b48fa9affected
  • 5ac388db27c443dadfbb0b8b23fa7ccf429d901a to < a846aecb931b4d65d5eafa92a0623545af46d4f2affected
  • 6.6.120 to < 6.6.148affected

Linux Linux

Default version status: affected

  • 6.7affected
  • 0 to < 6.7unaffected
  • 6.6.148 to ≤ 6.6.*unaffected
  • 6.12.101 to ≤ 6.12.*unaffected
  • 6.18.42 to ≤ 6.18.*unaffected
  • 7.1.6 to ≤ 7.1.*unaffected
  • 7.2 to ≤ *unaffected

References