RDMA/cma: Fix hang when cma_netevent_callback fails to queue… (CVE-2025-38151)

Summary

RDMA/cma: Fix hang when cma_netevent_callback fails to queue_work

Original description

The description as published by the source.

In the Linux kernel, the following vulnerability has been resolved:

RDMA/cma: Fix hang when cma_netevent_callback fails to queue_work

The cited commit fixed a crash when cma_netevent_callback was called for
a cma_id while work on that id from a previous call had not yet started.
The work item was re-initialized in the second call, which corrupted the
work item currently in the work queue.

However, it left a problem when queue_work fails (because the item is
still pending in the work queue from a previous call). In this case,
cma_id_put (which is called in the work handler) is therefore not
called. This results in a userspace process hang (zombie process).

Fix this by calling cma_id_put() if queue_work fails.

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Affected packages

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.142"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.94"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.34"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.15.3"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

BellSoft Alpaquita BELL-CVE-2025-38151 linux-lts Fixed in: 6.1.143-r1
Debian DEBIAN-CVE-2025-38151 linux Fixed in: 6.1.147-1
Ubuntu UBUNTU-CVE-2025-38151 linux-hwe-edge

Summary

Original description

Affected packages

Fix status by distribution

References