Bug 2493502

Summary: CVE-2026-39835 cri-o1.35: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate [fedora-all]
Product: [Fedora] Fedora Reporter: Isaiah Johnson <isjohnso>
Component: cri-o1.35Assignee: Brad Smith <bradley.g.smith>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: bradley.g.smith, go-sig
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["f4cc6d1e-98c2-4117-9868-9c7bcba15ea3"]}
Fixed In Version: Doc Type: ---
Doc Text:
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Clone Of: Environment:
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Regression: --- Mount Type: ---
Documentation: --- CRM:
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 2480680    

Description Isaiah Johnson 2026-06-26 14:43:08 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Comment 1 Brad Smith 2026-07-07 19:40:33 UTC 
Confirmed

    {
      "vulnerability": {
        "@id": "https://pkg.go.dev/vuln/GO-2026-5015",
        "name": "GO-2026-5015",
        "description": "Invoking server panic during CheckHostKey/Authenticate in golang.org
/x/crypto/ssh",
        "aliases": [
          "CVE-2026-39835"
        ]
      },
      "products": [
        {
          "@id": "Unknown Product",
          "subcomponents": [
            {
              "@id": "pkg:golang/golang.org%2Fx%2Fcrypto.0"
            }
          ]
        }
      ],
      "status": "affected"
    },