In the Linux kernel, the following vulnerability has been resolved: RDMA: During rereg_mr ensure that REREG_ACCESS is compatible If IB_MR_REREG_ACCESS changes from RO to RW then the umem has to be re-evaluated to ensure it is properly pinned as RW. Since the umem is hidden inside each driver's mr struct add a ib_umem_check_rereg() function that each driver has to call before processing IB_MR_REREG_ACCESS. mlx4 has to retain its duplicate ib_access_writable check because it implements IB_MR_REREG_ACCESS | IB_MR_REREG_TRANS by changing both items in place sequentially while the MR is live, so it will continue to not support this combination.
| Vendor | Product | Versions |
|---|---|---|
| linux | linux kernel | b40656aa7d559adc1fe689396dc58b92a9a27286, b40656aa7d559adc1fe689396dc58b92a9a27286, b40656aa7d559adc1fe689396dc58b92a9a27286, b40656aa7d559adc1fe689396dc58b92a9a27286, b40656aa7d559adc1fe689396dc58b92a9a27286, 6.2 |
Downstream vendors/products affected by this vulnerability
| Vendor | Product | Source | Confidence |
|---|---|---|---|
| linux | linux | mitre_affected | 90% |
| open source | open source linux kernel | cert_advisory | 90% |
Updated description with critical vulnerability details, added affected versions, changed severity to CRITICAL, and noted that the exploit is not available.
Updated description with more technical detail, added affected versions, and specified a fixed version number for patch availability.
Updated description with more technical detail, added affected versions, changed severity to HIGH, and specified the patch available version as 6.6.143.
Initial creation
