Medium severity5.9NVD Advisory· Published Nov 12, 2026· Updated Nov 12, 2026
CVE-2026-127099
CVE-2026-127099
Description
A flaw was found in SSSD's conversion of X.509 certificate RSA public keys to SSH keys. Missing size checks before copying RSA components into fixed-size stack buffers can cause a stack buffer overflow. An attacker able to supply a certificate with oversized RSA components that passes the configured certificate checks can cause denial of service and corrupt SSH responder memory.
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Affected products
2Patches
Vulnerability mechanics
References
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