High 7.5Published May 28, 2026

CVE-2026-46177ipmi: Add limits to event and receive message requests

Updated under an hour ago (Oct 27, 2026, 12:40 PM ET)

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It affects Linux and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Linux

Exploited in the last 30 days

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: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 112df8e631636cafda64dcee4561daf09ce74a4a; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 304b56883b7eff73eb606c35d062c8101aaf5471; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9059dc94421e1d4f8e5844204608b37ebfddb3da; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 67c44e0deba936d5edaebea356b4589eb43acb5c; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before e20212b431bef217d3886b86bbc90cc3ed00de68; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 3d37d2165df9504ea99d9e6181552dc4d2d1ab37; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c024167fb00489baee08c72182ca2e7dc5fb9f20; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c4cca236968683eb0d59abfb12d5c7e4d8514227	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 2.6.12.1 before 5.10.258; from 5.11 before 5.15.209; from 5.16 before 6.1.175; from 6.2 before 6.6.140; from 6.7 before 6.12.88; from 6.13 before 6.18.30; from 6.19 before 7.0.7; 2.6.12; and 6 more ranges	NVD

References

References

https://git.kernel.org/stable/c/112df8e631636cafda64dcee4561daf09ce74a4a	patch
https://git.kernel.org/stable/c/304b56883b7eff73eb606c35d062c8101aaf5471	patch
https://git.kernel.org/stable/c/9059dc94421e1d4f8e5844204608b37ebfddb3da	patch
https://git.kernel.org/stable/c/67c44e0deba936d5edaebea356b4589eb43acb5c	patch
https://git.kernel.org/stable/c/e20212b431bef217d3886b86bbc90cc3ed00de68	patch
https://git.kernel.org/stable/c/3d37d2165df9504ea99d9e6181552dc4d2d1ab37	patch
https://git.kernel.org/stable/c/c024167fb00489baee08c72182ca2e7dc5fb9f20	patch
https://git.kernel.org/stable/c/c4cca236968683eb0d59abfb12d5c7e4d8514227	patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.