# CVE-2022-48694: linux: In the Linux kernel, the following vulnerability has been resolved:  RDMA/irdma: Fix drain SQ hang with no completion...

CVE-2022-48694 is fixed in linux on 1 platform, first by DEBIAN-CVE-2022-48694, released May 3, 2024. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-48694
- Priority: High
- CVSS: 7.8 (high)
- EPSS: 0.0061
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 3, 2024

## Description

In the Linux kernel, the following vulnerability has been resolved:  RDMA/irdma: Fix drain SQ hang with no completion  SW generated completions for outstanding WRs posted on SQ after QP is in error target the wrong CQ. This causes the ib_drain_sq to hang with no completion.  Fix this to generate completions on the right CQ.  [  863.969340] INFO: task kworker/u52:2:671 blocked for more than 122 seconds. [  863.979224]       Not tainted 5.14.0-130.el9.x86_64 #1 [  863.986588] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [  863.996997] task:kworker/u52:2   state:D stack:    0 pid:  671 ppid:     2 flags:0x00004000 [  864.007272] Workqueue: xprtiod xprt_autoclose [sunrpc] [  864.014056] Call Trace: [  864.017575]  __schedule+0x206/0x580 [  864.022296]  schedule+0x43/0xa0 [  864.026736]  schedule_timeout+0x115/0x150 [  864.032185]  __wait_for_common+0x93/0x1d0 [  864.037717]  ? usleep_range_state+0x90/0x90 [  864.043368]  __ib_drain_sq+0xf6/0x170 [ib_core] [  864.049371]  ? __rdma_block_iter_next+0x80/0x80 [ib_core] [  864.056240]  ib_drain_sq+0x66/0x70 [ib_core] [  864.062003]  rpcrdma_xprt_disconnect+0x82/0x3b0 [rpcrdma] [  864.069365]  ? xprt_prepare_transmit+0x5d/0xc0 [sunrpc] [  864.076386]  xprt_rdma_close+0xe/0x30 [rpcrdma] [  864.082593]  xprt_autoclose+0x52/0x100 [sunrpc] [  864.088718]  process_one_work+0x1e8/0x3c0 [  864.094170]  worker_thread+0x50/0x3b0 [  864.099109]  ? rescuer_thread+0x370/0x370 [  864.104473]  kthread+0x149/0x170 [  864.109022]  ? set_kthread_struct+0x40/0x40 [  864.114713]  ret_from_fork+0x22/0x30

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.19.11-1 | [DEBIAN-CVE-2022-48694](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48694.md) | May 3, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.19.11-1 | [DEBIAN-CVE-2022-48694](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48694.md) | May 3, 2024 |
| Linux | linux Debian 14 | 5.19.11-1 | [DEBIAN-CVE-2022-48694](https://patchblox.com/security/data/fix/linux/debian-cve-2022-48694.md) | May 3, 2024 |

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