CVE-2026-55654 - Openssh: heap out-of-bounds read in red hat enterprise linux versions of openssh gssapi indicator clean

[Starburst-David]

CVE ID: CVE-2026-55654
Published: June 23, 2026
Description: A flaw was found in OpenSSH. This vulnerability, a heap out-of-bounds read, occurs during the cleanup of GSSAPI (Generic Security Service Application Programming Interface) indicators when a trailing NULL termination is missing in the auth-indicators array. A remote attacker, under specific configurations involving GSSAPI authentication and a Kerberos environment, could exploit this to cause the SSH authentication path to crash or abort. This leads to a denial of service (DoS), impacting the availability of the SSH service.
Severity: 3.7 | LOW

More Information:
https://cvefeed.io/vuln/detail/CVE-2026-55654