An out-of-bounds read was found in the NC-SI OEM response handler of libslirp. A truncated NC-SI OEM Ethernet frame causes ncsi_rsp_handler_oem() to read up to 4 bytes beyond the supplied packet length and reflect the value into the response sent to the guest, resulting in guest-observable disclosure of adjacent host process memory.
History

Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Libslirp Project
Libslirp Project libslirp
Vendors & Products Libslirp Project
Libslirp Project libslirp

Tue, 22 Sep 2026 12:15:00 +0000

Type Values Removed Values Added
Description An out-of-bounds read was found in the NC-SI OEM response handler of libslirp. A truncated NC-SI OEM Ethernet frame causes ncsi_rsp_handler_oem() to read up to 4 bytes beyond the supplied packet length and reflect the value into the response sent to the guest, resulting in guest-observable disclosure of adjacent host process memory.
Title libslirp: libslirp: out-of-bounds read in NC-SI OEM response handler discloses host memory to guest
Weaknesses CWE-125
References
Metrics threat_severity

None

cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

threat_severity

Moderate


cve-icon MITRE

No data.

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-22T07:23:00Z

Links: CVE-2026-95507 - Bugzilla