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Affected Component
Analysis
libssh
Patched
Name
CVE-2026-0966
Description
A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
Analysis#
Vulnerability Ratings#
8.2
CVSSv31
6.5
other
NaN
other
Others affected components#
Resolved with patches#
libssh (yocto:kirkstone)
#
Title
Author
Resolve
1
CVE-2026-0966 doc: Update guided tour to use SHA256 fingerprints
Jakub Jelen <jjelen@redhat.com>
CVE-2026-0966
2
CVE-2026-0966 misc: Avoid heap buffer underflow in ssh_get_hexa
Jakub Jelen <jjelen@redhat.com>
CVE-2026-0966
libssh (yocto:scarthgap)
#
Title
Author
Resolve
1
CVE-2026-0966 tests: Test coverage for ssh_get_hexa
Jakub Jelen <jjelen@redhat.com>
CVE-2026-0966
2
CVE-2026-0966 doc: Update guided tour to use SHA256 fingerprints
Jakub Jelen <jjelen@redhat.com>
CVE-2026-0966
3
CVE-2026-0966 misc: Avoid heap buffer underflow in ssh_get_hexa
Jakub Jelen <jjelen@redhat.com>
CVE-2026-0966