CVE-2026-43221

ipmi: ipmb: initialise event handler read bytes

MEDIUM
5.5
CVSS Score
Published: May 6, 2026 at 11:28 AM UTC
Updated: June 17, 2026 at 10:49 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.1%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

5.16 ≤ v < 6.1.1655.16 ≤ v < 6.12.755.16 ≤ v < 6.18.165.16 ≤ v < 6.19.65.16 ≤ v < 6.6.1285.16 ≤ v < 7.06.13 ≤ v < 6.18.166.19 ≤ v < 6.19.66.2 ≤ v < 6.6.1286.7 ≤ v < 6.12.755.1663c4eb347164845b380089012fe43992511c0ad37.0 rc1
Vendor states this is fixed in 102712417bb6aa9a00d852bc59cb0a276db486c4 (fixed)
Vendor states this is fixed in 2dfbc8c17dd161885336e77e71c336cd62cf6748 (fixed)
Vendor states this is fixed in 56d5c0557e53c4d8d92a619fa83eaae178165e07 (fixed)
Vendor states this is fixed in 905554ebd76aeee370bfd5136ea11e0b9d75c6f1 (fixed)
Vendor states this is fixed in 9f235ccecd03c436cb1683eac16b12f119e54aa9 (fixed)
Vendor states this is fixed in f726b3a57e00bb6249c67714c11ae8b4b31719a1 (fixed)
Vendor states this is fixed in 5.16 (unaffected)
Vendor states this is fixed in 6.1.165 (unaffected)
Vendor states this is fixed in 6.12.75 (unaffected)
Vendor states this is fixed in 6.18.16 (unaffected)
Vendor states this is fixed in 6.19.6 (unaffected)
Vendor states this is fixed in 6.6.128 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-908

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