| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49929: RDMA/rxe: Fix mr leak in RESPST_ERR_RNR |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| RDMA/rxe: Fix mr leak in RESPST_ERR_RNR |
| |
| rxe_recheck_mr() will increase mr's ref_cnt, so we should call rxe_put(mr) |
| to drop mr's ref_cnt in RESPST_ERR_RNR to avoid below warning: |
| |
| WARNING: CPU: 0 PID: 4156 at drivers/infiniband/sw/rxe/rxe_pool.c:259 __rxe_cleanup+0x1df/0x240 [rdma_rxe] |
| ... |
| Call Trace: |
| rxe_dereg_mr+0x4c/0x60 [rdma_rxe] |
| ib_dereg_mr_user+0xa8/0x200 [ib_core] |
| ib_mr_pool_destroy+0x77/0xb0 [ib_core] |
| nvme_rdma_destroy_queue_ib+0x89/0x240 [nvme_rdma] |
| nvme_rdma_free_queue+0x40/0x50 [nvme_rdma] |
| nvme_rdma_teardown_io_queues.part.0+0xc3/0x120 [nvme_rdma] |
| nvme_rdma_error_recovery_work+0x4d/0xf0 [nvme_rdma] |
| process_one_work+0x582/0xa40 |
| ? pwq_dec_nr_in_flight+0x100/0x100 |
| ? rwlock_bug.part.0+0x60/0x60 |
| worker_thread+0x2a9/0x700 |
| ? process_one_work+0xa40/0xa40 |
| kthread+0x168/0x1a0 |
| ? kthread_complete_and_exit+0x20/0x20 |
| ret_from_fork+0x22/0x30 |
| |
| The Linux kernel CVE team has assigned CVE-2022-49929 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.18 with commit 8a1a0be894da0d06bfbb496cc2dc3057fa83e103 and fixed in 6.0.8 with commit 50b35ad2864a9d66f802f9ce193d99bbef64e219 |
| Issue introduced in 5.18 with commit 8a1a0be894da0d06bfbb496cc2dc3057fa83e103 and fixed in 6.1 with commit b5f9a01fae42684648c2ee3cd9985f80c67ab9f7 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2022-49929 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/infiniband/sw/rxe/rxe_resp.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/50b35ad2864a9d66f802f9ce193d99bbef64e219 |
| https://git.kernel.org/stable/c/b5f9a01fae42684648c2ee3cd9985f80c67ab9f7 |
