CVE-2026-46177

ipmi: Add limits to event and receive message requests

State: Published
Severity: 7.5 High
Published: May 28, 2026
Updated: Oct 15, 2026
Reserved: May 13, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 112df8e631636cafda64dcee4561daf09ce74a4aAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 304b56883b7eff73eb606c35d062c8101aaf5471Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9059dc94421e1d4f8e5844204608b37ebfddb3daAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 67c44e0deba936d5edaebea356b4589eb43acb5cAffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e20212b431bef217d3886b86bbc90cc3ed00de68Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 3d37d2165df9504ea99d9e6181552dc4d2d1ab37Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before c024167fb00489baee08c72182ca2e7dc5fb9f20Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before c4cca236968683eb0d59abfb12d5c7e4d8514227Affected
LinuxLinux	2.6.12Affected before 2.6.12Not affected 5.10.258 through 5.10.Not affected 5.15.209 through 5.15.Not affected 6.1.175 through 6.1.Not affected 6.6.140 through 6.6.Not affected 6.12.88 through 6.12.Not affected 6.18.30 through 6.18.Not affected 7.0.7 through 7.0.*Not affected 7.1 and laterNot affected

Product

Versions

LinuxLinux

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 112df8e631636cafda64dcee4561daf09ce74a4aAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 304b56883b7eff73eb606c35d062c8101aaf5471Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 9059dc94421e1d4f8e5844204608b37ebfddb3daAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 67c44e0deba936d5edaebea356b4589eb43acb5cAffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before e20212b431bef217d3886b86bbc90cc3ed00de68Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 3d37d2165df9504ea99d9e6181552dc4d2d1ab37Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before c024167fb00489baee08c72182ca2e7dc5fb9f20Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before c4cca236968683eb0d59abfb12d5c7e4d8514227Affected

LinuxLinux

2.6.12Affected
before 2.6.12Not affected
5.10.258 through 5.10.*Not affected
5.15.209 through 5.15.*Not affected
6.1.175 through 6.1.*Not affected
6.6.140 through 6.6.*Not affected
6.12.88 through 6.12.*Not affected
6.18.30 through 6.18.*Not affected
7.0.7 through 7.0.*Not affected
7.1 and laterNot affected

References

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