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

N/A

CVSS

Severity:

EPSS 0.02%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/50b35ad2864a9d66f802f9ce193d99bbef64e219
https://git.kernel.org/stable/c/b5f9a01fae42684648c2ee3cd9985f80c67ab9f7

Frequently Asked Questions

What is the severity of CVE-2022-49929?: CVE-2022-49929 has not yet been assigned a CVSS score.
How to fix CVE-2022-49929?: To fix CVE-2022-49929, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-49929 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49929 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-49929?: CVE-2022-49929 affects Linux Linux, Linux Linux.

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