Description
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.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= b40656aa7d559adc1fe689396dc58b92a9a27286, < 09dc18894148381d3bfc550083b1236043870dce; >= b40656aa7d559adc1fe689396dc58b92a9a27286, < eba5df21eda0fe7418efbea2f799f8ea1b8ca94c; >= b40656aa7d559adc1fe689396dc58b92a9a27286, < 2904e985a2917b5dac65df82733065e78a65fc9d; >= b40656aa7d559adc1fe689396dc58b92a9a27286, < 50334a05a950840b39a1ce3d2a173b4183db9b3e; >= b40656aa7d559adc1fe689396dc58b92a9a27286, < badad6fad60def1b9805559dd81dbab3d97b82aa |
| Linux | Linux | 6.2 |
References
- https://git.kernel.org/stable/c/09dc18894148381d3bfc550083b1236043870dcePatch
- https://git.kernel.org/stable/c/2904e985a2917b5dac65df82733065e78a65fc9dPatch
- https://git.kernel.org/stable/c/50334a05a950840b39a1ce3d2a173b4183db9b3ePatch
- https://git.kernel.org/stable/c/badad6fad60def1b9805559dd81dbab3d97b82aaPatch
- https://git.kernel.org/stable/c/eba5df21eda0fe7418efbea2f799f8ea1b8ca94cPatch
Timeline
- Published
- Jun 19, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Modified