CVE-2026-6245: A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function within the…
CVE-2026-6245 · Severity: medium · CVSS 5.5 · Published 2026-04-15
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).
No. Junglewise Threat Intelligence has no report of CVE-2026-6245 being exploited in the wild.
How severe is CVE-2026-6245?
Medium severity, with a CVSS score of 5.5, published 15 April 2026.
Which products and versions are affected?
Fedoraproject Sssd, Redhat Enterprise Linux, Redhat Openshift Container Platform. The advisory does not name versions.
Is there a fix for CVE-2026-6245?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-6245?
Check whether you run Fedoraproject Sssd, Redhat Enterprise Linux or Redhat Openshift Container Platform. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.