Sssd: out-of-bounds read in the sssd_CVE-2026-6245

5.5 / 10

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting in a local Denial of Service (DoS).

Basic Information

ID CVE-2026-6245

Source redhat

Published Apr 15, 2026 at 18:35

Affected Product

Vendor Red Hat

Product Red Hat Enterprise Linux 10

CWE Classification

CWE-805

References

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    "published": "2026-04-15T18:35:19.401Z",
    "modified": "2026-04-15T18:35:19.401Z",
    "type": "cve",
    "title": "Sssd: out-of-bounds read in the sssd",
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