cvedb.io
CVE-2026-3497
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-03-12T19:16:19.910 · Last modified 2026-06-30T03:19:13.117

Summary

Vulnerability in the OpenSSH GSSAPI delta included in various Linux distributions. This vulnerability affects the GSSAPI patches added by various Linux distributions and does not affect the OpenSSH upstream project itself. The usage of sshpkt_disconnect() on an error, which does not terminate the process, allows an attacker to send an unexpected GSSAPI message type during the GSSAPI key exchange to the server, which will call the underlying function and continue the execution of the program without setting the related connection variables. As the variables are not initialized to NULL the code later accesses those uninitialized variables, accessing random memory, which could lead to undefined behavior. The recommended workaround is to use ssh_packet_disconnect() instead, which does terminat

Affected products

canonical — ubuntu_linux

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.