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


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.09% (1st percentile)

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  • Snyk IDSNYK-RHEL7-LIBSSSSIMPLEIFP-21101370
  • published16 Oct 2026
  • disclosed5 Oct 2026

Introduced: 5 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 RHEL:7 libsss_simpleifp.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsss_simpleifp package and not the libsss_simpleifp package as distributed by RHEL. See How to fix? for RHEL:7 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