Out-of-bounds Write Affecting sssd package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.09% (1st percentile)

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  • Snyk IDSNYK-ECHOLATEST-SSSD-20536878
  • published6 Oct 2026
  • disclosed6 Oct 2026

Introduced: 6 Oct 2026

NewCVE-2026-104036  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest sssd.

NVD Description

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

A flaw was found in SSSD's NFS idmap plugin. When retrieving cached user or group names, the plugin detects if an entry exceeds the destination buffer size but fails to abort before copying data. A local attacker can trigger this vulnerability by requesting identity lookups that resolve to oversized cached entries, resulting in an out-of-bounds write. This flaw primarily leads to a Denial of Service (DoS) by crashing the identity mapping service, and may also corrupt adjacent process memory.

CVSS Base Scores

version 3.1