GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

OPENSUSE-SU-2026:10593-1

Vulnerability from csaf_opensuse - Published: 2026-04-21 00:00 - Updated: 2026-09-17 17:01
Summary
openCryptoki-3.26.0-6.1 on GA media
Severity
Moderate
Notes
Title of the patch: openCryptoki-3.26.0-6.1 on GA media
Description of the patch: These are all security issues fixed in the openCryptoki-3.26.0-6.1 package on the GA media of openSUSE Tumbleweed.
Patchnames: openSUSE-Tumbleweed-2026-10593
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Affected products
Product Identifier Version Remediation
Unresolved product id: openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.aarch64
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.ppc64le
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.s390x
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.x86_64
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.aarch64
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.ppc64le
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.s390x
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.x86_64
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.aarch64
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.ppc64le
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.s390x
Vendor Fix
Unresolved product id: openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.x86_64
Vendor Fix
Threats
Impact moderate

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  "vulnerabilities": [
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      "ids": [
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          "text": "https://www.suse.com/security/cve/CVE-2026-40253"
        }
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      "notes": [
        {
          "category": "general",
          "text": "openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. In versions 3.26.0 and below, the BER/DER decoding functions in the shared common library (asn1.c) accept a raw pointer but no buffer length parameter, and trust attacker-controlled BER length fields without validating them against actual buffer boundaries. All primitive decoders are affected: ber_decode_INTEGER, ber_decode_SEQUENCE, ber_decode_OCTET_STRING, ber_decode_BIT_STRING, and ber_decode_CHOICE. Additionally, ber_decode_INTEGER can produce integer underflows when the encoded length is zero. An attacker supplying a malformed BER-encoded cryptographic object through PKCS#11 operations such as C_CreateObject or C_UnwrapKey, token loading from disk, or remote backend communication can trigger out-of-bounds reads. This affects all token backends (Soft, ICA, CCA, TPM, EP11, ICSF) since the vulnerable code is in the shared common library. A patch is available thorugh commit ed378f463ef73364c89feb0fc923f4dc867332a3.",
          "title": "CVE description"
        }
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          "url": "https://www.suse.com/security/cve/CVE-2026-40253"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1262283 for CVE-2026-40253",
          "url": "https://bugzilla.suse.com/1262283"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1263819 for CVE-2026-40253",
          "url": "https://bugzilla.suse.com/1263819"
        }
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      "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": [
            "openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.aarch64",
            "openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.ppc64le",
            "openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.s390x",
            "openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.x86_64",
            "openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.aarch64",
            "openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.ppc64le",
            "openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.s390x",
            "openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.x86_64",
            "openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.aarch64",
            "openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.ppc64le",
            "openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.s390x",
            "openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.aarch64",
            "openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.ppc64le",
            "openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.s390x",
            "openSUSE Tumbleweed:openCryptoki-0:3.26.0-6.1.x86_64",
            "openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.aarch64",
            "openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.ppc64le",
            "openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.s390x",
            "openSUSE Tumbleweed:openCryptoki-64bit-0:3.26.0-6.1.x86_64",
            "openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.aarch64",
            "openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.ppc64le",
            "openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.s390x",
            "openSUSE Tumbleweed:openCryptoki-devel-0:3.26.0-6.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-21T00:00:00Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-40253"
    }
  ]
}



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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.

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Detection rules are retrieved from Rulezet.

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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.


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