CVE-2022-48694

/// Technical 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]

[ 86

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References