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SUSE-SU-2026:20753-1

Vulnerability from csaf_suse - Published: 2026-03-18 18:11 - Updated: 2026-09-16 19:35
Summary
Security update for protobuf
Severity
Moderate
Notes
Title of the patch: Security update for protobuf
Description of the patch: This update for protobuf fixes the following issues: Security fixes: - CVE-2025-4565: Fixed parsing of untrusted Protocol Buffers data containing an arbitrary number of recursive groups or messages that could lead to crash due to RecursionError (bsc#1244663). - CVE-2026-0994: Fixed google.protobuf.Any recursion depth bypass in Python json_format.ParseDict (bsc#1257173). Other fixes: - Fixed import issues of reverse-dependency packages within the google namespace (bsc#1244918).
Patchnames: SUSE-SL-Micro-6.2-408
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-2025-4565
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2026-0994
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 8 products, the same list as for CVE-2025-4565
Threats
Impact moderate
References
To clipboard 

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          "text": "Any project that uses Protobuf Pure-Python backend  to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP  tags can be corrupted by exceeding the Python recursion limit. This can result in a Denial of service by crashing the application with a RecursionError. We recommend upgrading to version =\u003e6.31.1 or beyond commit  17838beda2943d08b8a9d4df5b68f5f04f26d901",
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          "text": "A denial-of-service (DoS) vulnerability exists in google.protobuf.json_format.ParseDict() in Python, where the max_recursion_depth limit can be bypassed when parsing nested google.protobuf.Any messages.\n\nDue to missing recursion depth accounting inside the internal Any-handling logic, an attacker can supply deeply nested Any structures that bypass the intended recursion limit, eventually exhausting Python\u0027s recursion stack and causing a RecursionError.",
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          "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.aarch64",
          "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.ppc64le",
          "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.s390x",
          "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-0994",
          "url": "https://www.suse.com/security/cve/CVE-2026-0994"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1257173 for CVE-2026-0994",
          "url": "https://bugzilla.suse.com/1257173"
        }
      ],
      "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 6.2:libprotobuf28_3_0-28.3-160000.3.1.aarch64",
            "SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.ppc64le",
            "SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.s390x",
            "SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.x86_64",
            "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.aarch64",
            "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.ppc64le",
            "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.s390x",
            "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.aarch64",
            "SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.ppc64le",
            "SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.s390x",
            "SUSE Linux Micro 6.2:libprotobuf28_3_0-28.3-160000.3.1.x86_64",
            "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.aarch64",
            "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.ppc64le",
            "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.s390x",
            "SUSE Linux Micro 6.2:libutf8_range-28_3_0-28.3-160000.3.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-03-18T18:11:52Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-0994"
    }
  ]
}



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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.


Detection rules are retrieved from Rulezet.


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.