CVE-2026-120830 — Vulnerability intelligence
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Published:
- CVSS
- 7.4
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
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.