5.5

CVE-2026-6245

Sssd: out-of-bounds read in the sssd

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).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Fedoraproject ≫ Sssd Version-
Redhat ≫ Enterprise Linux Version6.0
Redhat ≫ Enterprise Linux Version7.0
Redhat ≫ Enterprise Linux Version8.0
Redhat ≫ Enterprise Linux Version9.0
Redhat ≫ Enterprise Linux Version10.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.14% 0.034
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
RedHat 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-805 Buffer Access with Incorrect Length Value

The product uses a sequential operation to read or write a buffer, but it uses an incorrect length value that causes it to access memory that is outside of the bounds of the buffer.

https://bugzilla.redhat.com/show_bug.cgi?id=2457954
Vendor Advisory
Issue Tracking
https://access.redhat.com/security/cve/CVE-2026-6245
Vendor Advisory