CVE-2024-42145
Linux kernel IB/core Denial of Service (DoS)
Description
In the Linux kernel, the following vulnerability has been resolved: IB/core: Implement a limit on UMAD receive List The existing behavior of ib_umad, which maintains received MAD packets in an unbounded list, poses a risk of uncontrolled growth. As user-space applications extract packets from this list, the rate of extraction may not match the rate of incoming packets, leading to potential list overflow. To address this, we introduce a limit to the size of the list. After considering typical scenarios, such as OpenSM processing, which can handle approximately 100k packets per second, and the 1-second retry timeout for most packets, we set the list size limit to 200k. Packets received beyond this limit are dropped, assuming they are likely timed out by the time they are handled by user-space. Notably, packets queued on the receive list due to reasons like timed-out sends are preserved even when the list is full.
INFO
Published Date :
July 30, 2024, 8:15 a.m.
Last Modified :
July 30, 2024, 1:32 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
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CVE-2024-42145.
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The following table lists the changes that have been made to the
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CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 30, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: IB/core: Implement a limit on UMAD receive List The existing behavior of ib_umad, which maintains received MAD packets in an unbounded list, poses a risk of uncontrolled growth. As user-space applications extract packets from this list, the rate of extraction may not match the rate of incoming packets, leading to potential list overflow. To address this, we introduce a limit to the size of the list. After considering typical scenarios, such as OpenSM processing, which can handle approximately 100k packets per second, and the 1-second retry timeout for most packets, we set the list size limit to 200k. Packets received beyond this limit are dropped, assuming they are likely timed out by the time they are handled by user-space. Notably, packets queued on the receive list due to reasons like timed-out sends are preserved even when the list is full. Added Reference kernel.org https://git.kernel.org/stable/c/1288cf1cceb0e6df276e182f5412370fb4169bcb [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b4913702419d064ec4c4bbf7270643c95cc89a1b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/62349fbf86b5e13b02721bdadf98c29afd1e7b5f [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/d73cb8862e4d6760ccc94d3b57b9ef6271400607 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/63d202d948bb6d3a28cd8e8b96b160fa53e18baa [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b8c5f635997f49c625178d1a0cb32a80ed33abe6 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a6627fba793cc75b7365d9504a0095fb2902dda4 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ca0b44e20a6f3032224599f02e7c8fb49525c894 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-42145 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-42145
weaknesses.