alsa-2026:18160
Vulnerability from osv_almalinux
Published
2026-05-19 00:00
Modified
2026-05-26 12:31
Summary
Moderate: libssh security update
Details

libssh is a library which implements the SSH protocol. It can be used to implement client and server applications.

Security Fix(es):

  • libssh: Buffer underflow in ssh_get_hexa() on invalid input (CVE-2026-0966)
  • libssh: Improper sanitation of paths received from SCP servers (CVE-2026-0964)
  • libssh: libssh: Denial of Service via improper configuration file handling (CVE-2026-0965)
  • libssh: libssh: Denial of Service via inefficient regular expression processing (CVE-2026-0967)
  • libssh: libssh: Denial of Service due to malformed SFTP message (CVE-2026-0968)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libssh"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.12.0-2.el10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libssh-config"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.12.0-2.el10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libssh-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.12.0-2.el10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "libssh is a library which implements the SSH protocol. It can be used to implement client and server applications.  \n\nSecurity Fix(es):  \n\n  * libssh: Buffer underflow in ssh_get_hexa() on invalid input (CVE-2026-0966)\n  * libssh: Improper sanitation of paths received from SCP servers (CVE-2026-0964)\n  * libssh: libssh: Denial of Service via improper configuration file handling (CVE-2026-0965)\n  * libssh: libssh: Denial of Service via inefficient regular expression processing (CVE-2026-0967)\n  * libssh: libssh: Denial of Service due to malformed SFTP message (CVE-2026-0968)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.  \n\nAdditional Changes:  \n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.\n",
  "id": "ALSA-2026:18160",
  "modified": "2026-05-26T12:31:04Z",
  "published": "2026-05-19T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:18160"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0964"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0965"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0966"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0967"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-0968"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2433121"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2436979"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2436980"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2436981"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2436982"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2026-18160.html"
    }
  ],
  "related": [
    "CVE-2026-0966",
    "CVE-2026-0964",
    "CVE-2026-0965",
    "CVE-2026-0967",
    "CVE-2026-0968"
  ],
  "summary": "Moderate: libssh security update"
}


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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.