Out-of-bounds Read Affecting libslirp package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.22% (13th percentile)

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  • Snyk IDSNYK-DEBIAN12-LIBSLIRP-22151027
  • published3 Nov 2026
  • disclosed3 Nov 2026

Introduced: 3 Nov 2026

NewCVE-2026-120830  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

There is no fixed version for Debian:12 libslirp.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libslirp package and not the libslirp package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1