CVE-2026-97491
Received Received - Intake

rds rdma shutdown hang in Linux kernel

Publication date: 2026-09-24

Last updated on: 2026-09-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: net/rds: Don't sleep inside rds_ib_conn_path_shutdown New rds rdma self tests exposed a hang when tearing down the ib network configs. This is caused by the shutdown worker thread sleeping on the wait_event call, which blocks other work items in the queue. Fix this by changing wait_event to wait_event timeout, and looping until the wait check succeeds.

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-09-24
AI Q&A
2026-09-24
EPSS Evaluated
N/A
NVD
CVE-2026-97491
EUVD
EUVD-2026-86089

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves a hang during the shutdown of RDMA (Remote Direct Memory Access) network configurations. The issue occurs because the shutdown worker thread sleeps on a wait_event call, blocking other work items in the queue. The fix replaces wait_event with wait_event_timeout and loops until the condition is met.

Detection Guidance

This vulnerability may cause hangs during RDS IB network teardown. Monitor for system hangs or unresponsive network interfaces during shutdown. Check kernel logs for rds_ib_conn_path_shutdown related hangs or timeouts.

Impact Analysis

This vulnerability can cause system hangs or delays when tearing down RDMA network configurations, potentially disrupting network services that rely on RDMA. Users may experience unresponsive systems or degraded performance during shutdown operations.

Mitigation Strategies

Apply the Linux kernel patch that resolves this issue. Update to a kernel version containing the fix for net/rds: Don't sleep inside rds_ib_conn_path_shutdown. Restart affected services after applying the patch.

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