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


Severity

Recommended
low

Based on Debian security rating.

Threat Intelligence

EPSS
0.45% (39th percentile)

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  • Snyk IDSNYK-DEBIAN12-MTR-17973198
  • published15 Jul 2026
  • disclosed10 Jul 2026

Introduced: 10 Jul 2026

CVE-2026-14461  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

There is no fixed version for Debian:12 mtr.

NVD Description

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

mtr is vulnerable to Out-of-bound read vulnerability in ipinfo_lookup() function. An attacker who can influence the TXT response used for AS lookups can trigger this bug by returning a DNS response that is larger than 512 bytes and uses a crafted compression pointer in the answer NAME field. ipinfo_lookup() function uses the length of the response as the end-of-message boundary for dn_expand() function. The result is a reliable crash.

This issue exists in the mtr through version 0.96 and it was fixed in commit 48e1794414d338ce47abc0f27c25ade8788af9c3.

CVSS Base Scores

version 3.1