CVE-2026-0966 (GCVE-0-2026-0966)
Vulnerability from cvelistv5
Published
2026-03-26 20:06
Modified
2026-05-19 13:17
Severity ?
6.5 (Medium) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
CWE
  • CWE-124 - Buffer Underwrite ('Buffer Underflow')
Summary
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.
References
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:0.12.0-2.el10   < *
    cpe:/o:redhat:enterprise_linux:10.2
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   Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:0.10.4-18.el9   < *
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
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   Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:0.10.4-18.el9   < *
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/o:redhat:enterprise_linux:9::baseos
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   Red Hat Red Hat Hardened Images Unaffected: 0.12.0-1.1.hum1   < *
    cpe:/a:redhat:hummingbird:1
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   Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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   Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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   Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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   Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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   Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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