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CVE-2024-38544 Details

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the resp_pkts queue and then a decision is made whether to run the completer task inline or schedule it. Finally the skb is dereferenced to bump a 'hw' performance counter. This is wrong because if the completer task is already running in a separate thread it may have already processed the skb and freed it which can cause a seg fault. This has been observed infrequently in testing at high scale. This patch fixes this by changing the order of enqueuing the packet until after the counter is accessed.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.3 MEDIUMVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

CNA: CISA-ADPCVSS-B:6.3 MEDIUMVector:CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://git.kernel.org/stable/c/21b4c6d4d89030fd4657a8e7c8110fd941049794	kernel.org	Patch
https://git.kernel.org/stable/c/2b23b6097303ed0ba5f4bc036a1c07b6027af5c6	kernel.org	Patch
https://git.kernel.org/stable/c/30df4bef8b8e183333e9b6e9d4509d552c7da6eb	kernel.org	Patch
https://git.kernel.org/stable/c/bbad88f111a1829f366c189aa48e7e58e57553fc	kernel.org	Patch
https://git.kernel.org/stable/c/c91fb72a2ca6480d8d77262eef52dc5b178463a3	kernel.org	Patch
https://git.kernel.org/stable/c/de5a059e36657442b5637cc16df5163e435b9cb4	kernel.org	Patch
https://git.kernel.org/stable/c/e0e14dd35d4242340c7346aac60c7ff8fbf87ffc	kernel.org	Patch
https://git.kernel.org/stable/c/faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19	kernel.org	Patch
https://git.kernel.org/stable/c/21b4c6d4d89030fd4657a8e7c8110fd941049794	CVE	Patch
https://git.kernel.org/stable/c/2b23b6097303ed0ba5f4bc036a1c07b6027af5c6	CVE	Patch
https://git.kernel.org/stable/c/30df4bef8b8e183333e9b6e9d4509d552c7da6eb	CVE	Patch
https://git.kernel.org/stable/c/bbad88f111a1829f366c189aa48e7e58e57553fc	CVE	Patch
https://git.kernel.org/stable/c/faa8d0ecf6c9c7c2ace3ca3e552180ada6f75e19	CVE	Patch
https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html	CVE

see all 14 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-416	Use After Free	[email protected]

Affected Products

Product	Versions
linux linux kernel	>= 4.12, < 5.4.285 >= 5.5, < 5.10.227 >= 5.11, < 5.15.168 >= 5.16, < 6.1.93 >= 6.2, < 6.6.33
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.

Change History

10 change records found show changes

Date	Action	Recorded By
Aug 4, 2026	CVE Modified	kernel.org
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	kernel.org
Nov 3, 2025	CVE Modified	CVE
Oct 20, 2025	Initial Analysis	[email protected]
Nov 21, 2024	CVE Modified	CVE
Nov 8, 2024	CVE Modified	kernel.org
Nov 6, 2024	CVE Modified	CISA-ADP
Oct 17, 2024	CVE Modified	kernel.org
Jun 19, 2024	New CVE Received	kernel.org