Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: RDMA/mana_ib: drain QP references after partial table insertion mana_table_store_ud_qp() publishes a QP at its send-queue id before inserting the receive-queue id, dropping the XArray lock between the two xa_insert_irq() calls. A concurrent completion handler can look up the QP and take a transient reference. When the second insertion fails, the rollback erased only the send-queue entry and returned, leaving both the initial table reference and the transient reference outstanding while RDMA core frees the QP, causing a use-after-free. Drain the reference as normal destruction does: drop the initial reference and wait for qp->free, releasing the QP only after every concurrent lookup returns its reference.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8001e9257eca23264550ff9e34598ee43a80f0f9 before 4aaa2ab816c710be7385b31d08373edcdcd71656; affected 8001e9257eca23264550ff9e34598ee43a80f0f9 before 638b9a5364c1482e5d104823c1a3884b3d249484; affected 8001e9257eca23264550ff9e34598ee43a80f0f9 before 97f7c2262c28ebcae64fc957ee978646684a5ed9 |
| Linux / Linux | affected 6.15; unaffected 0 before 6.15; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.