CVE-2026-120830
📛 CVE Title
Libslirp: libslirp: out-of-bounds heap read in icmp_forward_error() leading to information disclosure
Description
A flaw was found in libslirp in icmp_forward_error(). When building an ICMP error response, the length of the quoted original IPv4 packet was taken from the IP header without clamping it to the actual buffer length. A truncated or malformed packet could cause an out-of-bounds heap read, leaking host memory into the ICMP error packet returned to a guest or container.
Overview
- State
- PUBLISHED
- Assigner (CNA)
- redhat
- CVSS severity
- HIGH
- CVSS score
- 7.4 / 10
- CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N- Effective score
- 7.4 / 10 HIGH source: CNA overview
- CWE(s)
-
CWE-125 - Reserved
- 2026-11-02
- Published
- 2026-11-03 00:00 UTC
- Last updated
- 2026-11-03 00:26 UTC
- Source
- https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/120xxx/CVE-2026-120830.json
- Linked Threat
- CVE-2026-120830 — Libslirp: libslirp: out-of-bounds heap read in icmp_forward_error() leading to information disclosure
European Union Vulnerability Database ENISA EUVD
ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.
- EUVD ID
-
EUVD-2026-115651
EUVD enrichment is queued; refresh the page in a few seconds.
Affected products (7)
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 5 | — | — |
Vendor references (3)
References embedded in the original CVE record by the assigning CNA.
- https://access.redhat.com/security/cve/CVE-2026-120830 vdb-entryx_refsource_REDHAT
- RHBZ#2565424 issue-trackingx_refsource_REDHAT
- https://gitlab.freedesktop.org/slirp/libslirp/-/commit/21b33a6c5588af9f58d15e528fdc1019452708e4
Web references (0)
DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.
No web references attached yet.
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Raw JSON
The full cvelistV5 record. Download as CVE-2026-120830.json.
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