CVE-2026-85505
Description
A stack-based out-of-bounds read vulnerability was found in the FreeIPMI ipmi-oem utility. When processing an abnormally short response from a Baseboard Management Controller (BMC), the application over-reads the buffer. A malicious BMC could exploit this to crash the client application (Denial of Service) or potentially leak stack memory. Red Hat compiler safeguards further restrict the impact primarily to a process crash.
Statement
A flaw in the ipmi_oem_fujitsu_get_sel_entry_long_text function of FreeIPMI allows an out-of-bounds read. If a BMC returns an unexpectedly truncated System Event Log (SEL) response, the client fails to validate the data length before reading. This causes the application to read past the allocated stack buffer boundaries, leading to a crash or potential memory disclosure.
Mitigation
Restrict IPMI and BMC access to a dedicated, trusted management network so ipmi-oem cannot reach untrusted or compromised Fujitsu controllers. Until a fixed freeipmi package is installed, do not run ipmi-oem fujitsu get-sel-entry-long-text against untrusted BMCs. If that OEM SEL long-text query is not required, do not use ipmi-oem against remote management controllers.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.5 | N/A | 7.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
An attacker could get secret values such as cryptographic keys, PII, memory addresses, or other information that could be used in additional attacks.
Confidentiality
Technical Impact: Bypass Protection Mechanism
Out-of-bounds memory could contain memory addresses or other information that can be used to bypass ASLR and other protection mechanisms in order to improve the reliability of exploiting a separate weakness for code execution.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
An attacker could cause a segmentation fault or crash by causing memory to be read outside of the bounds of the buffer. This is especially likely when the code reads a variable amount of data and assumes that a sentinel exists to stop the read operation, such as a NUL in a string.
Other
Technical Impact: Varies by Context
The read operation could produce other undefined or unexpected results.
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