{
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    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
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          "category": "description",
          "text": "SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
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          "title": "Statement"
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          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:65126",
          "url": "https://access.redhat.com/errata/RHSA-2026:65126"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:66022",
          "url": "https://access.redhat.com/errata/RHSA-2026:66022"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/errata/RHSA-2026:66521",
          "url": "https://access.redhat.com/errata/RHSA-2026:66521"
        },
        {
          "category": "external",
          "summary": "https://access.redhat.com/security/cve/CVE-2026-39835",
          "url": "https://access.redhat.com/security/cve/CVE-2026-39835"
        },
        {
          "category": "external",
          "summary": "https://bugzilla.redhat.com/show_bug.cgi?id=2480680",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480680"
        },
        {
          "category": "external",
          "summary": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39835.json",
          "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39835.json"
        }
      ],
      "release_date": "2026-05-22T04:16:00Z",
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        },
        {
          "category": "impact",
          "date": "2026-10-15T17:37:23.080663Z",
          "details": "The buildah package for TuxCare 9.8 ESU is not affected by CVE-2026-39835. The flaw is in the CertChecker public key callback of golang.org/x/crypto/ssh, which is not part of this package: no ssh.(*CertChecker) functions are present in the shipped /usr/bin/buildah binary.",
          "product_ids": [
            "AlmaLinux-9.8:buildah-2:1.43.3-2.el9_8.tuxcare.els1.aarch64",
            "AlmaLinux-9.8:buildah-2:1.43.3-2.el9_8.tuxcare.els1.x86_64",
            "AlmaLinux-9.8:buildah-tests-2:1.43.3-2.el9_8.tuxcare.els1.aarch64",
            "AlmaLinux-9.8:buildah-tests-2:1.43.3-2.el9_8.tuxcare.els1.x86_64",
            "Rocky Linux-9.8:buildah-2:1.43.3-2.el9_8.tuxcare.els1.aarch64",
            "Rocky Linux-9.8:buildah-2:1.43.3-2.el9_8.tuxcare.els1.x86_64",
            "Rocky Linux-9.8:buildah-tests-2:1.43.3-2.el9_8.tuxcare.els1.aarch64",
            "Rocky Linux-9.8:buildah-tests-2:1.43.3-2.el9_8.tuxcare.els1.x86_64"
          ]
        }
      ]
    }
  ]
}