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")
| Vendor | Product | Versions |
|---|---|---|
| intel | linux kernel | 715fdb3b30541cc8180b7cdc6aa9f8c307afdf25, 5ac388db27c443dadfbb0b8b23fa7ccf429d901a, 5ac388db27c443dadfbb0b8b23fa7ccf429d901a, 5ac388db27c443dadfbb0b8b23fa7ccf429d901a, 5ac388db27c443dadfbb0b8b23fa7ccf429d901a, 6.7 |
Downstream vendors/products affected by this vulnerability
| Vendor | Product | Source | Confidence |
|---|---|---|---|
| open source | open source linux kernel | cert_advisory | 90% |
Updated description with critical severity, new affected versions, and corrected exploit availability.
Initial creation
