SUSE-SU-2026:21571-1

Vulnerability from csaf_suse - Published: 2026-05-06 18:18 - Updated: 2026-05-06 18:18
Summary
Security update for libtpms
Severity
Moderate
Notes
Title of the patch: Security update for libtpms
Description of the patch: This update for libtpms fixes the following issues: - CVE-2025-49133: Fixed potential out of bounds (OOB) read vulnerability (bsc#1244528). - CVE-2026-21444: Fixed remote data confidentiality compromise via incorrect Initialization Vector (IV) handling (bsc#1260439).
Patchnames: SUSE-SLES-16.0-714
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-2025-49133
5.9 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.x86_64 —
Vendor Fix
Threats
Impact moderate
CVE-2026-21444
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.x86_64 —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.aarch64 —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.ppc64le —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.s390x —
Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.x86_64 —
Vendor Fix
Threats
Impact moderate
References
To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for libtpms",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for libtpms fixes the following issues:\n\n- CVE-2025-49133: Fixed potential out of bounds (OOB) read vulnerability (bsc#1244528).\n- CVE-2026-21444: Fixed remote data confidentiality compromise via incorrect Initialization Vector (IV) handling\n  (bsc#1260439).\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-SLES-16.0-714",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
      "namespace": "https://www.suse.com/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SUSE ratings",
        "url": "https://www.suse.com/support/security/rating/"
      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2026_21571-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2026:21571-1",
        "url": "https://www.suse.com/support/update/announcement/2026/suse-su-202621571-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2026:21571-1",
        "url": "https://lists.suse.com/pipermail/sle-updates/2026-May/046339.html"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1244528",
        "url": "https://bugzilla.suse.com/1244528"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1260439",
        "url": "https://bugzilla.suse.com/1260439"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2025-49133 page",
        "url": "https://www.suse.com/security/cve/CVE-2025-49133/"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2026-21444 page",
        "url": "https://www.suse.com/security/cve/CVE-2026-21444/"
      }
    ],
    "title": "Security update for libtpms",
    "tracking": {
      "current_release_date": "2026-05-06T18:18:33Z",
      "generator": {
        "date": "2026-05-06T18:18:33Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
        }
      },
      "id": "SUSE-SU-2026:21571-1",
      "initial_release_date": "2026-05-06T18:18:33Z",
      "revision_history": [
        {
          "date": "2026-05-06T18:18:33Z",
          "number": "1",
          "summary": "Current version"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libtpms0-0.10.0-160000.5.1.aarch64",
                "product": {
                  "name": "libtpms0-0.10.0-160000.5.1.aarch64",
                  "product_id": "libtpms0-0.10.0-160000.5.1.aarch64"
                }
              }
            ],
            "category": "architecture",
            "name": "aarch64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libtpms0-0.10.0-160000.5.1.ppc64le",
                "product": {
                  "name": "libtpms0-0.10.0-160000.5.1.ppc64le",
                  "product_id": "libtpms0-0.10.0-160000.5.1.ppc64le"
                }
              }
            ],
            "category": "architecture",
            "name": "ppc64le"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libtpms0-0.10.0-160000.5.1.s390x",
                "product": {
                  "name": "libtpms0-0.10.0-160000.5.1.s390x",
                  "product_id": "libtpms0-0.10.0-160000.5.1.s390x"
                }
              }
            ],
            "category": "architecture",
            "name": "s390x"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "libtpms0-0.10.0-160000.5.1.x86_64",
                "product": {
                  "name": "libtpms0-0.10.0-160000.5.1.x86_64",
                  "product_id": "libtpms0-0.10.0-160000.5.1.x86_64"
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "SUSE Linux Enterprise Server 16.0",
                "product": {
                  "name": "SUSE Linux Enterprise Server 16.0",
                  "product_id": "SUSE Linux Enterprise Server 16.0",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:suse:sles:16:16.0:server"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "SUSE Linux Enterprise Server for SAP applications 16.0",
                "product": {
                  "name": "SUSE Linux Enterprise Server for SAP applications 16.0",
                  "product_id": "SUSE Linux Enterprise Server for SAP applications 16.0",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:suse:sles:16:16.0:server-sap"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "SUSE Linux Enterprise"
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libtpms0-0.10.0-160000.5.1.aarch64 as component of SUSE Linux Enterprise Server 16.0",
          "product_id": "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.aarch64"
        },
        "product_reference": "libtpms0-0.10.0-160000.5.1.aarch64",
        "relates_to_product_reference": "SUSE Linux Enterprise Server 16.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libtpms0-0.10.0-160000.5.1.ppc64le as component of SUSE Linux Enterprise Server 16.0",
          "product_id": "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.ppc64le"
        },
        "product_reference": "libtpms0-0.10.0-160000.5.1.ppc64le",
        "relates_to_product_reference": "SUSE Linux Enterprise Server 16.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libtpms0-0.10.0-160000.5.1.s390x as component of SUSE Linux Enterprise Server 16.0",
          "product_id": "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.s390x"
        },
        "product_reference": "libtpms0-0.10.0-160000.5.1.s390x",
        "relates_to_product_reference": "SUSE Linux Enterprise Server 16.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libtpms0-0.10.0-160000.5.1.x86_64 as component of SUSE Linux Enterprise Server 16.0",
          "product_id": "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.x86_64"
        },
        "product_reference": "libtpms0-0.10.0-160000.5.1.x86_64",
        "relates_to_product_reference": "SUSE Linux Enterprise Server 16.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libtpms0-0.10.0-160000.5.1.aarch64 as component of SUSE Linux Enterprise Server for SAP applications 16.0",
          "product_id": "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.aarch64"
        },
        "product_reference": "libtpms0-0.10.0-160000.5.1.aarch64",
        "relates_to_product_reference": "SUSE Linux Enterprise Server for SAP applications 16.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libtpms0-0.10.0-160000.5.1.ppc64le as component of SUSE Linux Enterprise Server for SAP applications 16.0",
          "product_id": "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.ppc64le"
        },
        "product_reference": "libtpms0-0.10.0-160000.5.1.ppc64le",
        "relates_to_product_reference": "SUSE Linux Enterprise Server for SAP applications 16.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libtpms0-0.10.0-160000.5.1.s390x as component of SUSE Linux Enterprise Server for SAP applications 16.0",
          "product_id": "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.s390x"
        },
        "product_reference": "libtpms0-0.10.0-160000.5.1.s390x",
        "relates_to_product_reference": "SUSE Linux Enterprise Server for SAP applications 16.0"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "libtpms0-0.10.0-160000.5.1.x86_64 as component of SUSE Linux Enterprise Server for SAP applications 16.0",
          "product_id": "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.x86_64"
        },
        "product_reference": "libtpms0-0.10.0-160000.5.1.x86_64",
        "relates_to_product_reference": "SUSE Linux Enterprise Server for SAP applications 16.0"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-49133",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-49133"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Libtpms is a library that targets the integration of TPM functionality into hypervisors, primarily into Qemu. Libtpms, which is derived from the TPM 2.0 reference implementation code published by the Trusted Computing Group, is prone to a potential out of bounds (OOB) read vulnerability. The vulnerability occurs in the \u0027CryptHmacSign\u0027 function with an inconsistent pairing of the signKey and signScheme parameters, where the signKey is ALG_KEYEDHASH key and inScheme is an ECC or RSA scheme. The reported vulnerability is in the \u0027CryptHmacSign\u0027 function, which is defined in the \"Part 4: Supporting Routines - Code\" document, section \"7.151 - /tpm/src/crypt/CryptUtil.c \". This vulnerability can be triggered from user-mode applications by sending malicious commands to a TPM 2.0/vTPM (swtpm) whose firmware is based on an affected TCG reference implementation. The effect on libtpms is that it will cause an abort due to the detection of the out-of-bounds access, thus for example making a vTPM (swtpm) unavailable to a VM. This vulnerability is fixed in 0.7.12, 0.8.10, 0.9.7, and 0.10.1.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
          "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
          "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.s390x",
          "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.x86_64",
          "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
          "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
          "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.s390x",
          "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-49133",
          "url": "https://www.suse.com/security/cve/CVE-2025-49133"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1244528 for CVE-2025-49133",
          "url": "https://bugzilla.suse.com/1244528"
        }
      ],
      "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 Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.s390x",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.x86_64",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.s390x",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.s390x",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.x86_64",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.s390x",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-05-06T18:18:33Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2025-49133"
    },
    {
      "cve": "CVE-2026-21444",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2026-21444"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "libtpms, a library that provides software emulation of a Trusted Platform Module, has a flaw in versions 0.10.0 and 0.10.1. The commonly used integration of libtpms with OpenSSL 3.x contained a vulnerability related to the returned IV (initialization vector) when certain symmetric ciphers were used. Instead of returning the last IV it returned the initial IV to the caller, thus weakening the subsequent encryption and decryption steps. The highest threat from this vulnerability is to data confidentiality. Version 0.10.2 fixes the issue. No known workarounds are available.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
          "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
          "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.s390x",
          "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.x86_64",
          "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
          "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
          "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.s390x",
          "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2026-21444",
          "url": "https://www.suse.com/security/cve/CVE-2026-21444"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1260439 for CVE-2026-21444",
          "url": "https://bugzilla.suse.com/1260439"
        }
      ],
      "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 Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.s390x",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.x86_64",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.s390x",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.s390x",
            "SUSE Linux Enterprise Server 16.0:libtpms0-0.10.0-160000.5.1.x86_64",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.aarch64",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.ppc64le",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.s390x",
            "SUSE Linux Enterprise Server for SAP applications 16.0:libtpms0-0.10.0-160000.5.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-05-06T18:18:33Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2026-21444"
    }
  ]
}


Log in or create an account to share your comment.




Tags
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.


Detection rules are retrieved from Rulezet.