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CVE-2026-68743

📛 CVE Title

Sssd: sssd: pam responder out-of-bounds read via unchecked auth_token_length in protocol v1

Description

A flaw was found in SSSD. The extract_authtok_v1() function in the PAM responder does not validate the auth_token_length field against the remaining buffer size before processing. A local attacker can exploit this via a crafted protocol v1 request to the PAM responder socket, causing an out-of-bounds read and process crash, resulting in a denial of service.

Overview

State
PUBLISHED
Assigner (CNA)
redhat
CVSS severity
MEDIUM
CVSS score
CVSS 5.5 / 10 5.5 5.5 / 10
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Effective score
5.5 / 10 MEDIUM source: CNA overview
CWE(s)
CWE-125
Reserved
2026-07-31
Published
2026-08-04 18:37 UTC
Last updated
2026-08-04 19:10 UTC
Source
https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/68xxx/CVE-2026-68743.json

Affected products (6)

VendorProductVersionsPlatforms
Red Hat Red Hat Enterprise Linux 10
Red Hat Red Hat Enterprise Linux 6
Red Hat Red Hat Enterprise Linux 7
Red Hat Red Hat Enterprise Linux 8
Red Hat Red Hat Enterprise Linux 9
Red Hat Red Hat OpenShift Container Platform 4

Vendor references (2)

References embedded in the original CVE record by the assigning CNA.

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-68743.json.

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