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        "text": "This update for google-guest-agent fixes the following issues:\n\n- CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2 :path pseudo-\n  header (bsc#1260264).\n- CVE-2026-56854,CVE-2026-56855,CVE-2026-78662: golang.org/x/crypto/ssh: authentication bypass and deadlocks in the\n  crypto/ssh library (bsc#1278597).\n",
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          "text": "https://www.suse.com/security/cve/CVE-2026-33186"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 `:path` pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the `:path` omitted the mandatory leading slash (e.g., `Service/Method` instead of `/Service/Method`). While the server successfully routed these requests to the correct handler, authorization interceptors (including the official `grpc/authz` package) evaluated the raw, non-canonical path string. Consequently, \"deny\" rules defined using canonical paths (starting with `/`) failed to match the incoming request, allowing it to bypass the policy if a fallback \"allow\" rule was present. This affects gRPC-Go servers that use path-based authorization interceptors, such as the official RBAC implementation in `google.golang.org/grpc/authz` or custom interceptors relying on `info.FullMethod` or `grpc.Method(ctx)`; AND that have a security policy contains specific \"deny\" rules for canonical paths but allows other requests by default (a fallback \"allow\" rule). The vulnerability is exploitable by an attacker who can send raw HTTP/2 frames with malformed `:path` headers directly to the gRPC server. The fix in version 1.79.3 ensures that any request with a `:path` that does not start with a leading slash is immediately rejected with a `codes.Unimplemented` error, preventing it from reaching authorization interceptors or handlers with a non-canonical path string. While upgrading is the most secure and recommended path, users can mitigate the vulnerability using one of the following methods: Use a validating interceptor (recommended mitigation); infrastructure-level normalization; and/or policy hardening.",
          "title": "CVE description"
        }
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          "summary": "SUSE Bug 1268676 for CVE-2026-33186",
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          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
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          "text": "https://www.suse.com/security/cve/CVE-2026-56854"
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        {
          "category": "general",
          "text": "The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client\u0027s remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback.",
          "title": "CVE description"
        }
      ],
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          "summary": "SUSE Bug 1278446 for CVE-2026-56854",
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        {
          "category": "general",
          "text": "Previously, after a channel has been established, a malicious peer could send crafted messages that would deadlock the entire connection. Now, we handle all RFC 4254 channel messages; global requests are handled explicitly. Then, treat all other messages as a protocol error and tear the connection down instead of buffering and blocking.",
          "title": "CVE description"
        }
      ],
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      ],
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        {
          "category": "general",
          "text": "Previously, a channel registered in the mux\u0027s chanList is not usable until it is established. A malicious peer was able flood the channel\u0027s incomingRequests, deadlocking the entire connection. Now, we add an atomic established state, set when a channel becomes usable. Until such a time, handlePacket drops every packet other than the open confirmation/failure, without blocking and without tearing down the connection.",
          "title": "CVE description"
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          "category": "external",
          "summary": "CVE-2026-78662",
          "url": "https://www.suse.com/security/cve/CVE-2026-78662"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1278446 for CVE-2026-78662",
          "url": "https://bugzilla.suse.com/1278446"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1280553 for CVE-2026-78662",
          "url": "https://bugzilla.suse.com/1280553"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.1:google-guest-agent-0:20260903.01-slfo.1.1_2.1.aarch64",
            "SUSE Linux Micro 6.1:google-guest-agent-0:20260903.01-slfo.1.1_2.1.ppc64le",
            "SUSE Linux Micro 6.1:google-guest-agent-0:20260903.01-slfo.1.1_2.1.s390x",
            "SUSE Linux Micro 6.1:google-guest-agent-0:20260903.01-slfo.1.1_2.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.1:google-guest-agent-0:20260903.01-slfo.1.1_2.1.aarch64",
            "SUSE Linux Micro 6.1:google-guest-agent-0:20260903.01-slfo.1.1_2.1.ppc64le",
            "SUSE Linux Micro 6.1:google-guest-agent-0:20260903.01-slfo.1.1_2.1.s390x",
            "SUSE Linux Micro 6.1:google-guest-agent-0:20260903.01-slfo.1.1_2.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-09-17T07:24:14Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-78662"
    }
  ]
}