CVE-2024-42145

CVE Details

Release Date:

2024-07-30

Description

In the Linux kernel, the following vulnerability has been resolved:\nIB/core: Implement a limit on UMAD receive List\nThe existing behavior of ib_umad, which maintains received MAD\npackets in an unbounded list, poses a risk of uncontrolled growth.\nAs user-space applications extract packets from this list, the rate\nof extraction may not match the rate of incoming packets, leading\nto potential list overflow.\nTo address this, we introduce a limit to the size of the list. After\nconsidering typical scenarios, such as OpenSM processing, which can\nhandle approximately 100k packets per second, and the 1-second retry\ntimeout for most packets, we set the list size limit to 200k. Packets\nreceived beyond this limit are dropped, assuming they are likely timed\nout by the time they are handled by user-space.\nNotably, packets queued on the receive list due to reasons like\ntimed-out sends are preserved even when the list is full.

See more information about CVE-2024-42145 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	4.7	CVSS Vector:	CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:H
Attack Vector:	Local network	Attack Complexity:	High
Privileges Required:	High	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	Low	Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12610	2024-09-10
Oracle Linux version 7 (kernel-uek)	ELSA-2024-12779	2024-10-11
Oracle Linux version 7 (kernel-uek-container)	ELSA-2024-12612	2024-09-11
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12610	2024-09-10
Oracle Linux version 8 (kernel-uek)	ELSA-2024-12618	2024-09-12
Oracle Linux version 8 (kernel-uek-container)	ELSA-2024-12612	2024-09-11
Oracle Linux version 9 (kernel-uek)	ELSA-2024-12618	2024-09-12