FreeIPMI up to 1.6.18 Fru ipmi-fru.c _read_fru_data stack-based overflow

Summaryinfo

A vulnerability marked as very critical has been reported in FreeIPMI up to 1.6.18. This affects the function _read_fru_data of the file libfreeipmi/fru/ipmi-fru.c of the component Fru. The manipulation leads to stack-based overflow. This vulnerability is referenced as CVE-2026-85509. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in FreeIPMI up to 1.6.18. This issue affects the function _read_fru_data of the file libfreeipmi/fru/ipmi-fru.c of the component Fru. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

FreeIPMI before 1.6.19 has a stack-based buffer overflow in _read_fru_data in libfreeipmi/fru/ipmi-fru.c when a BMC returns more bytes than requested.

It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2026-85509 since 09/04/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/05/2026).

The vulnerability scanner Nessus provides a plugin with the ID 342824 (Linux Distros Unpatched Vulnerability : CVE-2026-85509), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.6.19 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (342824). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• FreeIPMI

Version

• 1.6.0
• 1.6.1
• 1.6.2
• 1.6.3
• 1.6.4
• 1.6.5
• 1.6.6
• 1.6.7
• 1.6.8
• 1.6.9
• 1.6.10
• 1.6.11
• 1.6.12
• 1.6.13
• 1.6.14
• 1.6.15
• 1.6.16
• 1.6.17
• 1.6.18

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion