High [CVE-2026-85509] Arbitrary code execution via stack-based buffer overflow
This high-severity Red Hat Linux advisory covers CVE-2026-85509 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
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Summary
A flaw was found in FreeIPMI. This vulnerability is a stack-based buffer overflow in the _read_fru_data function, which occurs when a Baseboard Management Controller (BMC) returns more bytes than requested.
A remote attacker could exploit this flaw by sending a specially crafted response, potentially leading to arbitrary code execution. Important: This stack-based buffer overflow in FreeIPMI could lead to arbitrary code execution.
The vulnerability requires user interaction, as an attacker would need to entice an administrator to execute FreeIPMI commands against a malicious or compromised Baseboard Management Controller (BMC) that returns an oversized response. Red Hat severity: Important — CVSS 8.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
Weakness: CWE-121. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.
Will not fix / out of support: Red Hat Enterprise Linux 6. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: freeipmi.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- Restrict IPMI and BMC access to a dedicated, trusted management network so FreeIPMI clients cannot reach untrusted or compromised controllers. Please do not run ipmi-fru or bmc-device --read-fru against untrusted BMCs. If FRU inventory queries are not required, do not use those tools (or other libfreeipmi FRU callers) against remote management controllers.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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