USN-8843-1: FreeIPMI vulnerabilities

Publication date

29 September 2026

Overview

Several security issues were fixed in FreeIPMI.


Packages

  • freeipmi - in-band and out-of-band Intelligent Platform Management Interface

Details

It was discovered that FreeIPMI incorrectly handled certain malformed
Fujitsu SEL long-text responses, leading to a stack-based buffer
overflow. An attacker in control of a malicious IPMI device could
possibly use this issue to cause FreeIPMI to crash, resulting in a denial
of service, or possibly execute arbitrary code. (CVE-2026-85504)

It was discovered that FreeIPMI incorrectly handled short responses when
retrieving Fujitsu SEL entries, leading to a stack-based buffer
over-read. An attacker in control of a malicious IPMI device could
possibly use this issue to cause FreeIPMI to crash, resulting in a denial
of service. (CVE-2026-85505)

It was discovered that FreeIPMI incorrectly handled certain Dell iDRAC
and CMC IPv6 system information responses, leading to a stack-based
buffer overflow. An attacker in control of a malicious IPMI device...

It was discovered that FreeIPMI incorrectly handled certain malformed
Fujitsu SEL long-text responses, leading to a stack-based buffer
overflow. An attacker in control of a malicious IPMI device could
possibly use this issue to cause FreeIPMI to crash, resulting in a denial
of service, or possibly execute arbitrary code. (CVE-2026-85504)

It was discovered that FreeIPMI incorrectly handled short responses when
retrieving Fujitsu SEL entries, leading to a stack-based buffer
over-read. An attacker in control of a malicious IPMI device could
possibly use this issue to cause FreeIPMI to crash, resulting in a denial
of service. (CVE-2026-85505)

It was discovered that FreeIPMI incorrectly handled certain Dell iDRAC
and CMC IPv6 system information responses, leading to a stack-based
buffer overflow. An attacker in control of a malicious IPMI device could
possibly use this issue to cause FreeIPMI to crash, resulting in a denial
of service, or possibly execute arbitrary code. (CVE-2026-85506,
CVE-2026-85508)

It was discovered that FreeIPMI incorrectly handled certain Dell CMC
system information responses, leading to a stack-based buffer overflow.
An attacker in control of a malicious IPMI device could possibly use this
issue to cause FreeIPMI to crash, resulting in a denial of service, or
possibly execute arbitrary code. This issue only affected Ubuntu 16.04
LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04
LTS, and Ubuntu 26.04 LTS. (CVE-2026-85507)

It was discovered that FreeIPMI incorrectly handled FRU data responses
that were larger than requested, leading to a stack-based buffer
overflow. An attacker in control of a malicious IPMI device could
possibly use this issue to cause FreeIPMI to crash, resulting in a denial
of service, or possibly execute arbitrary code. (CVE-2026-85509)


Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
26.04 LTS resolute freeipmi-tools –  1.6.16-1ubuntu0.2
libfreeipmi17 –  1.6.16-1ubuntu0.2
24.04 LTS noble freeipmi-tools –  1.6.13-3ubuntu0.2
libfreeipmi17 –  1.6.13-3ubuntu0.2
22.04 LTS jammy freeipmi-tools –  1.6.9-2ubuntu0.22.04.4
libfreeipmi17 –  1.6.9-2ubuntu0.22.04.4
20.04 LTS focal freeipmi-tools –  1.6.4-3ubuntu1.1+esm2  
libfreeipmi-dev –  1.6.4-3ubuntu1.1+esm2  
libfreeipmi17 –  1.6.4-3ubuntu1.1+esm2  
18.04 LTS bionic freeipmi-tools –  1.4.11-1.1ubuntu4.1+esm2  
libfreeipmi-dev –  1.4.11-1.1ubuntu4.1+esm2  
libfreeipmi16 –  1.4.11-1.1ubuntu4.1+esm2  
16.04 LTS xenial freeipmi-tools –  1.4.11-1.1ubuntu4.1~0.16.04.1~esm2  
libfreeipmi-dev –  1.4.11-1.1ubuntu4.1~0.16.04.1~esm2  
libfreeipmi16 –  1.4.11-1.1ubuntu4.1~0.16.04.1~esm2  
14.04 LTS trusty freeipmi-tools –  1.1.5-3ubuntu3.3+esm2  
libfreeipmi-dev –  1.1.5-3ubuntu3.3+esm2  
libfreeipmi12 –  1.1.5-3ubuntu3.3+esm2  

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