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.
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- Linux / Linuxb40656aa7d559adc1fe689396dc58b92a9a27286 – 09dc18894148381d3bfc550083b1236043870dce
- Linux / Linuxb40656aa7d559adc1fe689396dc58b92a9a27286 – eba5df21eda0fe7418efbea2f799f8ea1b8ca94c
- Linux / Linuxb40656aa7d559adc1fe689396dc58b92a9a27286 – 2904e985a2917b5dac65df82733065e78a65fc9d
- Linux / Linuxb40656aa7d559adc1fe689396dc58b92a9a27286 – 50334a05a950840b39a1ce3d2a173b4183db9b3e
- Linux / Linuxb40656aa7d559adc1fe689396dc58b92a9a27286 – badad6fad60def1b9805559dd81dbab3d97b82aa
- Linux / Linux6.2 – 6.2
- Linux / Linux0 – 6.2
- Linux / Linux6.6.143 – 6.6.*
- Linux / Linux6.12.94 – 6.12.*
- Linux / Linux6.18.36 – 6.18.*
- Linux / Linux7.0.13 – 7.0.*
- Linux / Linux7.1 – *
References
- MISChttps://git.kernel.org/stable/c/09dc18894148381d3bfc550083b1236043870dce
- MISChttps://git.kernel.org/stable/c/eba5df21eda0fe7418efbea2f799f8ea1b8ca94c
- MISChttps://git.kernel.org/stable/c/2904e985a2917b5dac65df82733065e78a65fc9d
- MISChttps://git.kernel.org/stable/c/50334a05a950840b39a1ce3d2a173b4183db9b3e
- MISChttps://git.kernel.org/stable/c/badad6fad60def1b9805559dd81dbab3d97b82aa