Fix CVE(s): CVE-2026-11386, CVE-2026-12391, CVE-2026-9494

{
  "id": "6bec7805620aca0b8349990f38cfdf182bdbbb4054d4f4cbfb2a1640aaebb519",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1785340982",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Fix CVE(s): CVE-2026-11386, CVE-2026-12391, CVE-2026-9494",
    "summary": "* Bump epoch to supersede the vendor package in the ELS channel (matches the ubuntu16/ubuntu18 ELS branches). * Add gpg to Build-Depends: the build-time test suite (uaclient/tests/test_gpg.py) invokes the gpg binary, which is not present in the minimal ELS build chroot. * Add debian/mark_skip_pytests.sh and invoke it from debian/rules: on FIPS-capable build hosts running in a disabled state, some status/FIPS pytests fail at build time; skip only those, only in that environment (matches the ubuntu16/ubuntu18 ELS branches). * Skip tools/check-versions-are-consistent.py in override_dh_auto_build: its regex does not handle a package epoch and misparses our 1:34~20.04+tuxcare.elsN version, aborting the build; version.py already matches the shipped upstream version (34). * SECURITY UPDATE: Pro bearer token exposed via apt-helper command line - Write APT credentials to a temporary 0600 auth file and pass a credential-free URL to apt-helper, instead of embedding the token in the download-file URL argument where it leaked to local users via /proc//cmdline. Source tarball re-packed with the fix (3.0 native). - cve-2026-9494 * SECURITY UPDATE: APT source injection via crafted contract-server response - validate contract directives (aptURL, suites, additionalPackages) to reject newline/CR/NUL/space characters, preventing injection of attacker-controlled lines into root-owned apt sources and the apt-get install invocation. Source tarball re-packed with the fix (3.0 native). - cve-2026-113",
    "evidence": "osv:CLSA-2026-1785340982",
    "products": [
      {
        "name": {
          "value": "ubuntu-advantage-pro",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:34~20.04+tuxcare.els1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ubuntu-advantage-tools",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:34~20.04+tuxcare.els1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ubuntu-pro-auto-attach",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:34~20.04+tuxcare.els1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ubuntu-pro-client",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:34~20.04+tuxcare.els1",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "ubuntu-pro-client-l10n",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1:34~20.04+tuxcare.els1",
            "evidence": "/affected/4/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1785340982",
      "aliases": [
        "CLSA-2026-1785340982"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:34~20.04+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "ubuntu-advantage-pro",
            "purl": "pkg:deb/tuxcare/ubuntu-advantage-pro?distro=ubuntu-20.04",
            "ecosystem": "TuxCare:Ubuntu:20.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1785340982.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:34~20.04+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "ubuntu-advantage-tools",
            "purl": "pkg:deb/tuxcare/ubuntu-advantage-tools?distro=ubuntu-20.04",
            "ecosystem": "TuxCare:Ubuntu:20.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1785340982.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:34~20.04+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "ubuntu-pro-auto-attach",
            "purl": "pkg:deb/tuxcare/ubuntu-pro-auto-attach?distro=ubuntu-20.04",
            "ecosystem": "TuxCare:Ubuntu:20.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1785340982.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:34~20.04+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "ubuntu-pro-client",
            "purl": "pkg:deb/tuxcare/ubuntu-pro-client?distro=ubuntu-20.04",
            "ecosystem": "TuxCare:Ubuntu:20.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1785340982.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1:34~20.04+tuxcare.els1"
                }
              ]
            }
          ],
          "package": {
            "name": "ubuntu-pro-client-l10n",
            "purl": "pkg:deb/tuxcare/ubuntu-pro-client-l10n?distro=ubuntu-20.04",
            "ecosystem": "TuxCare:Ubuntu:20.04"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu20.04els/CLSA-2026-1785340982.json"
          }
        }
      ],
      "modified": "2026-10-26T09:30:54.411821973Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-11386",
        "CVE-2026-12391",
        "CVE-2026-9494"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/ubuntu20.04els/CLSA-2026-1785340982.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-11386",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-12391",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-9494"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-11386",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-12391",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-9494",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 447321,
  "published_at": "2026-07-29T16:03:13+00:00"
}