Memory Leak Affecting gss-ntlmssp package, versions *


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.37% (29th percentile)

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  • Snyk IDSNYK-DEBIAN14-GSSNTLMSSP-19828832
  • published16 Sept 2026
  • disclosed15 Sept 2026

Introduced: 15 Sep 2026

CVE-2026-91926  (opens in a new tab)
CWE-401  (opens in a new tab)

How to fix?

There is no fixed version for Debian:14 gss-ntlmssp.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gss-ntlmssp package and not the gss-ntlmssp package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

A flaw was found in gss-ntlmssp. A memory leak occurs in the NTLM target-info parser when a crafted NTLM CHALLENGE message contains duplicated string-valued AV_PAIR entries. The parser allocates memory for each string value but does not free the previous allocation when the same AV_PAIR type appears more than once, leaking the earlier allocation. A malicious or man-in-the-middle server can exploit this to cause gradual memory exhaustion on the client during NTLM authentication, leading to a denial of service.

CVSS Base Scores

version 3.1