CVE-2021-47378

nvme-rdma: destroy cm id before destroy qp to avoid use after free

State: Published
Severity: 9.8 Critical
Published: May 21, 2024
Updated: Aug 5, 2026
Reserved: May 21, 2024

Description

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

nvme-rdma: destroy cm id before destroy qp to avoid use after free

We should always destroy cm_id before destroy qp to avoid to get cma event after qp was destroyed, which may lead to use after free. In RDMA connection establishment error flow, don't destroy qp in cm event handler.Just report cm_error to upper level, qp will be destroy in nvme_rdma_alloc_queue() after destroy cm id.

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
LinuxLinux	7110230719602852481c2793d054f866b2bf4a2b to before ecf0dc5a904830c926a64feffd8e01141f89822fAffected 7110230719602852481c2793d054f866b2bf4a2b to before d268a182c56e8361e19fb781137411643312b994Affected 7110230719602852481c2793d054f866b2bf4a2b to before 9817d763dbe15327b9b3ff4404fa6f27f927e744Affected
LinuxLinux	4.8Affected before 4.8Not affected 5.10.70 through 5.10.Not affected 5.14.9 through 5.14.Not affected 5.15 and laterNot affected

References

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