K000163533: libssh vulnerability CVE-2026-0966

Security Advisory Description A flaw was found in libssh. The API function sshgethexa 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...

Rocky Linux 10.2 [CIQ] Security Update: libssh / libssh-config / libssh-debuginfo / libssh-debugsource / etc Multiple Vulnerabilities (crlsa-2026_18160)

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202618160 advisory. libssh: Buffer underflow in sshgethexa on invalid input CVE-2026-0966 libssh: Improper sanitation of paths received from SCP servers CVE-2026-0964...

Rocky Linux 9.6 [TuxCare] Security Update: libssh / libssh-config / libssh-devel (ALMALINUX9.6:CLSA-2026:1778490111)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1778490111 advisory. - A flaw was found in libssh. The API function sshgethexa is vulnerable to a denial of service when processing zero-length input. This can ...

CentOS Linux 8.4 [TuxCare] Security Update: libssh / libssh-config / libssh-devel (CENTOS8.4:CLSA-2026:1777939266)

The CentOS Linux 8.4 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.4:CLSA-2026:1777939266 advisory. - A flaw was found in libssh. The API function sshgethexa is vulnerable to a denial of service when processing zero-length input. This can be...

CentOS Linux 8 [TuxCare] Security Update: libssh / libssh-config / libssh-devel (CENTOS-STREAM8:CLSA-2026:1778003186)

The CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS- STREAM8:CLSA-2026:1778003186 advisory. - A flaw was found in libssh. The API function sshgethexa is vulnerable to a denial of service when processing zero-length input. This ca...

CentOS Linux 8.5 [TuxCare] Security Update: libssh / libssh-config / libssh-devel (CENTOS8.5:CLSA-2026:1777939234)

The CentOS Linux 8.5 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.5:CLSA-2026:1777939234 advisory. - A flaw was found in libssh. The API function sshgethexa is vulnerable to a denial of service when processing zero-length input. This can be...

AlmaLinux 9.6 [TuxCare] Security Update: libssh / libssh-config / libssh-devel (ALMALINUX9.6:CLSA-2026:1778490111)

The AlmaLinux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1778490111 advisory. - A flaw was found in libssh. The API function sshgethexa is vulnerable to a denial of service when processing zero-length input. This can be...

AlmaLinux 9.2 [TuxCare] Security Update: libssh / libssh-config / libssh-devel (ALMALINUX9.2:CLSA-2026:1778082886)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1778082886 advisory. - A flaw was found in libssh. The API function sshgethexa is vulnerable to a denial of service when processing zero-length input. This can be...

JLSEC-2026-781

A flaw was found in libssh. The API function sshgethexa 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 se...

libssh: libssh: Denial of Service via zero-length input in ssh_get_hexa()

A flaw was found in libssh. The API function sshgethexa 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 se...

CLSA-2026-1778068747 Fix CVE(s): CVE-2026-0966

SECURITY UPDATE: heap buffer underflow in sshgethexa on zero-length or NULL input, remotely reachable via GSSAPI authentication logging - debian/patches/CVE-2026-0966.patch: reject NULL/zero-length input in sshgethexa in src/dh.c - CVE-2026-0966: fix heap buffer underflow in sshgethexa...

CLSA-2026-1777939266 libssh: Fix of CVE-2026-0966

CVE-2026-0966: fix heap buffer underflow in sshgethexa on NULL or zero-length input, remotely reachable via GSSAPI authentication logging...

CLSA-2026-1777939234 libssh: Fix of CVE-2026-0966

CVE-2026-0966: fix heap buffer underflow in sshgethexa on NULL or zero-length input, remotely reachable via GSSAPI authentication logging...

Libssh: buffer underflow in ssh_get_hexa() on invalid input

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AZL-81095 CVE-2026-0966 affecting package libssh for versions less than 0.10.6-7

A flaw was found in libssh. The API function sshgethexa 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 se...

CVE-2026-0966 Libssh: libssh: denial of service via zero-length input in ssh_get_hexa()

A flaw was found in libssh. The API function sshgethexa 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 se...

CVE-2026-0966

CVE-2026-0966 affects the libssh library with a buffer underflow in ssh_get_hexa() on invalid input. The issue occurs because ssh_get_hexa() is used by ssh_get_fingerprint_hash() and the deprecated ssh_print_hexa(), and also in gssapi logging. Remote triggering is possible when GSSAPI authenticat...

CVE-2026-0966

A flaw was found in libssh. The API function sshgethexa 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 se...

CVE-2026-0966: Buffer Underwrite

A flaw was found in libssh. The API function sshgethexa 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 se...

Important: libssh

Issue Overview: libssh: Buffer underflow in sshgethexa on invalid input CVE-2026-0966 Affected Packages: libssh Issue Correction: Run dnf update libssh --releasever 2023.10.20260302 or dnf update --advisory ALAS2023-2026-1461 --releasever 2023.10.20260302 to update your system. More information o...