PT-2024-11388 · Linux+2 · Linux Kernel+2
Tao Liu
·
Published
2021-09-13
·
Updated
2025-09-23
·
CVE-2021-47392
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A listener leak issue in the RDMA/cma component of the Linux kernel has been resolved. The issue occurs when
cma listen on all() fails, leaving the per-device ID on the listen list without setting the state to RDMA CM ADDR BOUND. As a result, when the cmid is eventually destroyed, cma cancel listens() is not called due to the incorrect state, and the per-device IDs still hold the refcount, preventing the ID from being destroyed and causing a deadlock. The issue is resolved by ensuring that cma listen on all() atomically unwinds its action under the lock during error.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Memory Leak
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Suse