CVE-2026-46177
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.50% probability · 41th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/112df8e631636cafda64dcee4561daf09ce74a4aPatch
- https://git.kernel.org/stable/c/304b56883b7eff73eb606c35d062c8101aaf5471Patch
- https://git.kernel.org/stable/c/3d37d2165df9504ea99d9e6181552dc4d2d1ab37Patch
- https://git.kernel.org/stable/c/67c44e0deba936d5edaebea356b4589eb43acb5cPatch
- https://git.kernel.org/stable/c/9059dc94421e1d4f8e5844204608b37ebfddb3daPatch
- https://git.kernel.org/stable/c/c024167fb00489baee08c72182ca2e7dc5fb9f20Patch
- https://git.kernel.org/stable/c/c4cca236968683eb0d59abfb12d5c7e4d8514227Patch
- https://git.kernel.org/stable/c/e20212b431bef217d3886b86bbc90cc3ed00de68Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.