What’s Vulnerable › Vulnerabilities

CVE-2026-46128: ipmi: Check event message buffer response for bad data

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-28 · updated 2026-10-15

Description

In the Linux kernel, the following vulnerability has been resolved: ipmi: Check event message buffer response for bad data The event message buffer response data size got checked later when processing, but check it right after the response comes back. It appears some BMCs may return an empty message instead of an error when fetching events. There are apparently some new BMCs that make this error, so we need to compensate.

Affected products

• 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 — fixed in 5.10.258, 5.15.209, 6.1.175, 6.12.88, 6.18.30, 6.6.140

How to fix

Upgrade to a fixed version: Linux kernel 5.10.258, 5.15.209, 6.1.175, 6.12.88. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/01f8387fa5b796f13cf50014c171f6da7abc46ea
• https://git.kernel.org/stable/c/2418e4b21fb1355504d095da5d5f0a210564a43d
• https://git.kernel.org/stable/c/24269264c3d59a49eb09b10af2c75b14f2931482
• https://git.kernel.org/stable/c/36920f30e78e69df01f9691c470b6f3ba8aebf98
• https://git.kernel.org/stable/c/42432b579a594b66ac32e5e7b7c26e6bc578ec89
• https://git.kernel.org/stable/c/474e53d4397087913a5b9c9eb90fa068da4808bf
• https://git.kernel.org/stable/c/7f7ada72c07a83b46045ddfeee526bd9e2e3c8f0
• https://git.kernel.org/stable/c/cf1ef30c42a7079e5bad863cd01c52aa3a17c3ac
• https://cert-portal.siemens.com/productcert/html/ssa-784472.html

Get alerted when CVE-2026-46128 or the next vulnerability affects your stack