Skip to content
CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-43120

RDMA/irdma: Fix double free related to rereg_user_mr

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/irdma: Fix double free related to rereg_user_mr If IB_MR_REREG_TRANS is set during rereg_user_mr, the umem will be released and a new one will be allocated in irdma_rereg_mr_trans. If any step of irdma_rereg_mr_trans fails after the new umem is allocated, it releases the umem, but does not set iwmr->region to NULL. The problem is that this failure is propagated to the user, who will then call ibv_dereg_mr (as they should). Then, the dereg_mr path will see a non-NULL umem and attempt to call ib_umem_release again. Fix this by setting iwmr->region to NULL after ib_umem_release. Fixed: 5ac388db27c4 ("RDMA/irdma: Add support to re-register a memory region")

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 < 62298a48f8b8788ad8b8464e6ffdf1ddebd2217eaffected
  • 5ac388db27c443dadfbb0b8b23fa7ccf429d901a to < 66964118f1f50ed85001c8fc9f7ab5bbdd021ee0affected
  • 5ac388db27c443dadfbb0b8b23fa7ccf429d901a to < 0f22c32141acdcda266b26cab2b830baf870f3e0affected
  • 5ac388db27c443dadfbb0b8b23fa7ccf429d901a to < 0c5d70bcb9d2275a1c8515a924016fcfeb4ab441affected
  • 5ac388db27c443dadfbb0b8b23fa7ccf429d901a to < 29a3edd7004bb635d299fb9bc6f0ea4ef13ed5a2affected
  • 6.6.120 to < 6.6.136affected

Linux Linux

Default version status: affected

  • 6.7affected
  • 0 to < 6.7unaffected
  • 6.6.136 to ≤ 6.6.*unaffected
  • 6.12.83 to ≤ 6.12.*unaffected
  • 6.18.24 to ≤ 6.18.*unaffected
  • 6.19.14 to ≤ 6.19.*unaffected
  • 7.0 to ≤ *unaffected

References