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Vulnerability record · CVE-2026-46177 · published 28 May 2026

CVE-2026-46177: Linux kernel vulnerability

Linux · Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: ipmi: Add limits to event and receive message requests The driver would just fetch events and receive messages until the BMC said it was done. To avoid issues with BMCs that never say they are done, add a limit of 10 fetches at a time. In addition, an si interface has an attn state it can return from the hardware which is supposed to cause a flag fetch to see if the driver needs to fetch events or message or a few other things. If the attn bit gets stuck, it's a similar problem. So allow messages in between flag fetches so the driver itself doesn't get stuck. This is a more general fix than the previous fix for the specific bad BMC, but should fix the more general issue of a BMC that won't stop saying it has data. This has been there from the beginning of the driver. It's not a bug per-se, but it is accounting for bugs in BMCs.

7.5 CVSS 3.1 High EPSS 0.72% · top 48.1%
7.5CVSS 3.1 base score
0.72%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

In the Linux kernel, the following vulnerability has been resolved: ipmi: Add limits to event and receive message requests The driver would just fetch events and receive messages until the BMC said it was done. To avoid issues with BMCs that never say they are done, add a limit of 10 fetches at a time. In addition, an si interface has an attn state it can return from the hardware which is supposed to cause a flag fetch to see if the driver needs to fetch events or message or a few other things. If the attn bit gets stuck, it's a similar problem. So allow messages in between flag fetches so the driver itself doesn't get stuck. This is a more general fix than the previous fix for the specific bad BMC, but should fix the more general issue of a BMC that won't stop saying it has data. This has been there from the beginning of the driver. It's not a bug per-se, but it is accounting for bugs in BMCs.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/112df8e631636cafda64dcee4561daf09ce74a4a Patch
https://git.kernel.org/stable/c/304b56883b7eff73eb606c35d062c8101aaf5471 Patch
https://git.kernel.org/stable/c/3d37d2165df9504ea99d9e6181552dc4d2d1ab37 Patch
https://git.kernel.org/stable/c/67c44e0deba936d5edaebea356b4589eb43acb5c Patch
https://git.kernel.org/stable/c/9059dc94421e1d4f8e5844204608b37ebfddb3da Patch
https://git.kernel.org/stable/c/c024167fb00489baee08c72182ca2e7dc5fb9f20 Patch
https://git.kernel.org/stable/c/c4cca236968683eb0d59abfb12d5c7e4d8514227 Patch
https://git.kernel.org/stable/c/e20212b431bef217d3886b86bbc90cc3ed00de68 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-46177), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.