CVE-2026-85508

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{"bugzilla": {"description": "freeipmi: FreeIPMI: stack-based buffer overflow in ipmi-oem Dell system info handler", "id": "2528401", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2528401"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-121", "details": ["A stack-based buffer overflow exists in FreeIPMI's ipmi-oem tool, in the Dell OEM handler for the get-system-info cmc-ipv6-info subcommand. The vulnerable function _output_dell_system_info_cmc_ipv6_info uses a 256-byte stack buffer but allows up to 65536 bytes of data to be copied from a BMC response without proper bounds checking."], "mitigation": {"lang": "en:us", "value": "Do not run ipmi-oem dell get-system-info subcommands (specifically idrac-info, cmc-info, and cmc-ipv6-info) against untrusted or unverified BMC endpoints. Restrict IPMI management network access to trusted administrators and trusted BMC controllers only. If the ipmi-oem Dell OEM subcommands are not needed, avoid using them entirely."}, "name": "CVE-2026-85508", "public_date": "2026-09-04T04:20:19Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-85508\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-85508\nhttps://ftp.gnu.org/gnu/freeipmi/freeipmi-1.6.19.tar.gz\nhttps://www.gnu.org/software/freeipmi/\nhttps://www.openwall.com/lists/oss-security/2026/08/28/5"], "statement": "This flaw has limited practical impact for several reasons: (1) ipmi-oem is a client-side command-line tool run manually by administrators, not a listening service or daemon \u2014 exploitation requires a user to actively run the specific Dell OEM subcommand against a compromised or malicious BMC; (2) IPMI communication typically occurs over a dedicated out-of-band management network, not the general Internet; (3) Red Hat Enterprise Linux builds FreeIPMI with full hardening enabled (_hardened_build 1), including stack protector (-fstack-protector-strong), which detects stack buffer corruption and terminates the process before the return address can be hijacked \u2014 effectively limiting the impact to a client-side crash rather than code execution; (4) additional mitigations including PIE, full RELRO, and NX further hinder exploitation even if the stack canary were bypassed.\nFix is available in FreeIPMI version 1.6.19.", "threat_severity": "Moderate"}

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