SUSE-SU-2026:23548-1

Vulnerability from csaf_suse - Published: 2026-09-10 08:33 - Updated: 2026-09-29 08:19
Summary
Security update for google-osconfig-agent
Severity
Important
Notes
Title of the patch: Security update for google-osconfig-agent
Description of the patch: This update for google-osconfig-agent fixes the following issues: This update for google-osconfig-agent fixes the following issues: - CVE-2026-56852: golang.org/x/text/unicode/norm: infinite loop on truncated/invalid UTF-8 input (bsc#1272118). - CVE-2026-84303: google.golang.org/grpc: xDS RBAC HTTP filter implementation issue allows for bypass of authorization policies via mixed-case or canonical-case header matches (bsc#1279297). - CVE-2026-84304: google.golang.org/grpc: heap memory exhaustion via HTTP/2 DATA frame fragmentation (bsc#1279414). - CVE-2026-84445: google.golang.org/grpc: DoS via crash due to missing ':authority' and 'Host' headers in gRPC-Go xDS servers (bsc#1278967). Changes for google-osconfig-agent: - Update to version 20260908.00 * Migrate presubmits from deb11 to deb12 (#1050) * Bump the go_modules group across 1 directory with 3 updates (#1047) * Introduce E2E v2 framework and inventory tests (#1039) * Remove test case for asserting JSON marshal error from task_state.go (#1045) * security: pin GitHub actions to commit SHAs in CodeQL workflow (#1042) * Add Configuration for SCALIBR (#1034) * add CheckState and Cleanup tests (#1008) * Improve unit tests for osinfo/osinfo_linux.go (#1020) * Bump github.com/go-git/go-git/v5 (#1036) * Bump cloud.google.com/go/auth from 0.18.0 to 0.22.0 (#1032) * Bump golang.org/x/crypto from 0.52.0 to 0.54.0 (#1028) * authenticate cloud build to use docker registry (#1030) * Migrate e2e build to internal image (#1024) * Upgrade google.golang.org/grpc to new version. (#1023) * Improve unit tests for ospatch/yum_update.go (#1012) * Improve unit tests for ospatch/updates.go (#1011) * Add unit tests for config/package_resource.go PART 2 (#1005) * Add unit tests for config/package_resource.go PART 1 (#1003) * Add unit tests for policies/local.go (#1015) * Add unit tests for repository_resource.go (#1002) * Add unit tests for installrecipe.go part 2 (#993) * Add unit tests for scalibr.go (#1019) * Add unit tests for installrecipe.go part 1 (#992) * Add test cases for policies/recipes/recipedb.go (#989) * Bump golang.org/x/crypto (#1021) * Add unit tests for policies/recipes/steps.go PART 3 (#976) * Add unit tests for policies/recipes/steps.go PART 2 (#975) * Bump golang.org/x/net (#1017) * upgrade x/net package. (#1018) * Add test cases for config/file_resource.go (#988) * Add unit tests for policies/recipes/artifacts.go (#985) * Add unit tests for policies/recipes/steps.go PART 1 (#974) * Add tests & bugfix for packages/trace.go (#939) * Add unit tests for agentendpoint/agentendpoint_beta.go (#983) * Replace yum install with yum update (#1009) * Bump github.com/containerd/containerd (#1013) * Add unit tests for policies/apt.go PART 2 (#957) * Add test cases for agentendpoint/task_state.go (#984) * Remove deprecated rhel-sap images and add new ones (#1007) * Add test cases for clog/clog.go (#986) * Use explicit upstream GitHub homepage in URL field
Patchnames: SUSE-SLE-Micro-6.0-891
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2026-39821
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.x86_64 —
Vendor Fix
Threats
Impact important
CVE-2026-56852
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 3 products, the same list as for CVE-2026-39821
Threats
Impact moderate
CVE-2026-84303
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Affected products
Recommended 3 products, the same list as for CVE-2026-39821
Threats
Impact critical
CVE-2026-84304
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 3 products, the same list as for CVE-2026-39821
Threats
Impact important
CVE-2026-84445
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Recommended 3 products, the same list as for CVE-2026-39821
Threats
Impact important
References
To clipboard 

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          "text": "https://www.suse.com/security/cve/CVE-2026-84303"
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        {
          "category": "general",
          "text": "gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, the xDS RBAC HTTP filter in internal/xds/httpfilter/rbac/rbac.go does not lowercase header matcher names in normalizeHeaderMatcher even though incoming metadata keys are lowercase. A DENY policy using a mixed-case name such as X-Role or User-Agent therefore does not match and fails open, allowing requests that should be rejected. The same case mismatch permits :Scheme or Grpc-Status to evade gRFC A41 validation and prevents Host from being rewritten to :authority. This issue is fixed in version 1.83.1.",
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          "category": "external",
          "summary": "CVE-2026-84303",
          "url": "https://www.suse.com/security/cve/CVE-2026-84303"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1278268 for CVE-2026-84303",
          "url": "https://bugzilla.suse.com/1278268"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1280553 for CVE-2026-84303",
          "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 6.0:google-osconfig-agent-0:20260908.00-1.1.aarch64",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.s390x",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.aarch64",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.s390x",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-09-10T08:33:00Z",
          "details": "critical"
        }
      ],
      "title": "CVE-2026-84303"
    },
    {
      "cve": "CVE-2026-84304",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-84304"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "gRPC-Go is the Go language implementation of gRPC. Prior to 1.83.1, internal/transport/transport.go stores each fragmented HTTP/2 DATA frame as a separate recvMsg in recvBuffer, so millions of one-byte frames can consume disproportionate heap memory even when payload bytes remain within connection and stream flow-control windows. An unauthenticated remote attacker can use concurrent multiplexed streams to exhaust process memory and cause a runtime panic or out-of-memory termination. Receive-buffer compaction is enabled by default and can be controlled temporarily with GRPC_GO_EXPERIMENTAL_ENABLE_RECEIVE_BUFFER_COMPACTION. This issue is fixed in version 1.83.1.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.aarch64",
          "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.s390x",
          "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-84304",
          "url": "https://www.suse.com/security/cve/CVE-2026-84304"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1278271 for CVE-2026-84304",
          "url": "https://bugzilla.suse.com/1278271"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1280553 for CVE-2026-84304",
          "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 6.0:google-osconfig-agent-0:20260908.00-1.1.aarch64",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.s390x",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.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:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.aarch64",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.s390x",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-09-10T08:33:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-84304"
    },
    {
      "cve": "CVE-2026-84445",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-84445"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "gRPC-Go is the Go language implementation of gRPC. Prior to 1.82.2 and 1.83.2, servers created with xds.NewGRPCServer() allow internal/transport/http2_server.go to accept an RPC containing neither the :authority header nor the Host header, while RouteAndProcess in internal/xds/server/routing.go assumes that an authority value exists and indexes the empty slice. A remote client that can complete transport connection establishment can trigger an index-out-of-bounds panic that is not recovered by the per-RPC goroutine and terminates the entire server process. In insecure or ordinary TLS deployments the request can be unauthenticated, while strict mTLS or ALTS deployments require valid transport credentials before the malformed RPC can reach the interceptor. This issue is fixed in versions 1.82.2 and 1.83.2.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.aarch64",
          "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.s390x",
          "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-84445",
          "url": "https://www.suse.com/security/cve/CVE-2026-84445"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1278687 for CVE-2026-84445",
          "url": "https://bugzilla.suse.com/1278687"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1280553 for CVE-2026-84445",
          "url": "https://bugzilla.suse.com/1280553"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1280617 for CVE-2026-84445",
          "url": "https://bugzilla.suse.com/1280617"
        }
      ],
      "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 6.0:google-osconfig-agent-0:20260908.00-1.1.aarch64",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.s390x",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.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:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.aarch64",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.s390x",
            "SUSE Linux Micro 6.0:google-osconfig-agent-0:20260908.00-1.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-09-10T08:33:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2026-84445"
    }
  ]
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.