Medium 5.5Published May 6, 2026

CVE-2026-43221ipmi: ipmb: initialise event handler read bytes

Updated under an hour ago (Oct 27, 2026, 12:30 PM ET)

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: ipmi: ipmb: initialise event handler read bytes IPMB doesn't use i2c reads, but the handler needs to set a value. Otherwise an i2c read will return an uninitialised value from the bus driver.

CVSS: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/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: Analyzed
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 63c4eb347164845b380089012fe43992511c0ad3 before 905554ebd76aeee370bfd5136ea11e0b9d75c6f1; 63c4eb347164845b380089012fe43992511c0ad3 builds before 56d5c0557e53c4d8d92a619fa83eaae178165e07; 63c4eb347164845b380089012fe43992511c0ad3 builds before 2dfbc8c17dd161885336e77e71c336cd62cf6748; from 63c4eb347164845b380089012fe43992511c0ad3 before f726b3a57e00bb6249c67714c11ae8b4b31719a1; from 63c4eb347164845b380089012fe43992511c0ad3 before 102712417bb6aa9a00d852bc59cb0a276db486c4; 63c4eb347164845b380089012fe43992511c0ad3 builds before 9f235ccecd03c436cb1683eac16b12f119e54aa9	CNA record
linux linux_kernel linux:linux_kernel	from 5.16 before 6.1.165; from 6.2 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.16; from 6.19 before 6.19.6; 7.0	NVD

References

References

https://git.kernel.org/stable/c/905554ebd76aeee370bfd5136ea11e0b9d75c6f1	patch
https://git.kernel.org/stable/c/56d5c0557e53c4d8d92a619fa83eaae178165e07	patch
https://git.kernel.org/stable/c/2dfbc8c17dd161885336e77e71c336cd62cf6748	patch
https://git.kernel.org/stable/c/f726b3a57e00bb6249c67714c11ae8b4b31719a1	patch
https://git.kernel.org/stable/c/102712417bb6aa9a00d852bc59cb0a276db486c4	patch
https://git.kernel.org/stable/c/9f235ccecd03c436cb1683eac16b12f119e54aa9	patch

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.