HIGH 7.4 NVD
CVE-2026-120830
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
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.
References
- https://access.redhat.com/security/cve/CVE-2026-120830
- https://bugzilla.redhat.com/show_bug.cgi?id=2565424
- https://gitlab.freedesktop.org/slirp/libslirp/-/commit/21b33a6c5588af9f58d15e528fdc1019452
This high severity vulnerability with a CVSS score of 7.4 was published on 2026-11-03 via NVD.
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