Vulnerability-Lookup

alsa-2026:4898

Vulnerability from osv_almalinux

Published

2026-03-18 00:00

Modified

2026-03-19 15:08

Summary

Important: capstone security update

Details

Capstone is a disassembly framework with the target of becoming the ultimate disasm engine for binary analysis and reversing in the security community.

Security Fix(es):

capstone: Capstone: Memory corruption via unchecked vsnprintf return (CVE-2025-68114)
capstone: Capstone: Heap buffer overflow via skipdata callback allows denial of service or arbitrary code execution. (CVE-2025-67873)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:4898	ADVISORY
	https://access.redhat.com/security/cve/CVE-2025-67873	REPORT
	https://access.redhat.com/security/cve/CVE-2025-68114	REPORT
	https://bugzilla.redhat.com/2423416	REPORT
	https://bugzilla.redhat.com/2423419	REPORT
	https://errata.almalinux.org/9/ALSA-2026-4898.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "capstone"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.2-11.el9_7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "capstone-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.2-11.el9_7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "capstone-java"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.2-11.el9_7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "python3-capstone"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.0.2-11.el9_7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "Capstone is a disassembly framework with the target of becoming the ultimate disasm engine for binary analysis and reversing in the security community.  \n\nSecurity Fix(es):  \n\n  * capstone: Capstone: Memory corruption via unchecked vsnprintf return (CVE-2025-68114)\n  * capstone: Capstone: Heap buffer overflow via skipdata callback allows denial of service or arbitrary code execution. (CVE-2025-67873)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:4898",
  "modified": "2026-03-19T15:08:06Z",
  "published": "2026-03-18T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:4898"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-67873"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-68114"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2423416"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2423419"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-4898.html"
    }
  ],
  "related": [
    "CVE-2025-68114",
    "CVE-2025-67873"
  ],
  "summary": "Important: capstone security update"
}

CVE-2025-67873 (GCVE-0-2025-67873)

Vulnerability from cvelistv5 – Published: 2025-12-17 21:12 – Updated: 2025-12-18 15:09

Title

Capstone doesn't check Skipdata length, leading to cs_insn.bytes heap buffer overflow

Summary

Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue.

Severity ?

4.8 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

GitHub_M

References

URL

Tags

	https://github.com/capstone-engine/capstone/secur…	x_refsource_CONFIRM
	https://github.com/capstone-engine/capstone/commi…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	capstone-engine	capstone	Affected: <= 6.0.0-Alpha5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-67873",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-18T14:55:59.806611Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-18T15:09:19.484Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "capstone",
          "vendor": "capstone-engine",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 6.0.0-Alpha5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, Skipdata length is not bounds-checked, so a user-provided skipdata callback can make cs_disasm/cs_disasm_iter memcpy more than 24 bytes into cs_insn.bytes, causing a heap buffer overflow in the disassembly path. Commit cbef767ab33b82166d263895f24084b75b316df3 fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-122",
              "description": "CWE-122: Heap-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-17T21:12:13.739Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-hj6g-v545-v7jg"
        },
        {
          "name": "https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/capstone-engine/capstone/commit/cbef767ab33b82166d263895f24084b75b316df3"
        }
      ],
      "source": {
        "advisory": "GHSA-hj6g-v545-v7jg",
        "discovery": "UNKNOWN"
      },
      "title": "Capstone doesn\u0027t check Skipdata length, leading to cs_insn.bytes heap buffer overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-67873",
    "datePublished": "2025-12-17T21:12:13.739Z",
    "dateReserved": "2025-12-12T18:53:03.237Z",
    "dateUpdated": "2025-12-18T15:09:19.484Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2025-68114 (GCVE-0-2025-68114)

Vulnerability from cvelistv5 – Published: 2025-12-17 21:14 – Updated: 2025-12-18 15:09

Title

Capstone doesn't check vsnprintf return in SStream_concat, allows stack buffer underflow and overflow

Summary

Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, an unchecked vsnprintf return in SStream_concat lets a malicious cs_opt_mem.vsnprintf drive SStream’s index negative or past the end, leading to a stack buffer underflow/overflow when the next write occurs. Commit 2c7797182a1618be12017d7d41e0b6581d5d529e fixes the issue.

Severity ?

4.8 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

CWE

CWE-124 - Buffer Underwrite ('Buffer Underflow')
CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Assigner

GitHub_M

References

URL

Tags

	https://github.com/capstone-engine/capstone/secur…	x_refsource_CONFIRM
	https://github.com/capstone-engine/capstone/commi…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	capstone-engine	capstone	Affected: <= 6.0.0-Alpha5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-68114",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-18T14:55:48.777775Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-12-18T15:09:11.561Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-85f5-6xr3-q76r"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "capstone",
          "vendor": "capstone-engine",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 6.0.0-Alpha5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Capstone is a disassembly framework. In versions 6.0.0-Alpha5 and prior, an unchecked vsnprintf return in SStream_concat lets a malicious cs_opt_mem.vsnprintf drive SStream\u2019s index negative or past the end, leading to a stack buffer underflow/overflow when the next write occurs. Commit 2c7797182a1618be12017d7d41e0b6581d5d529e fixes the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-124",
              "description": "CWE-124: Buffer Underwrite (\u0027Buffer Underflow\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-120",
              "description": "CWE-120: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-17T21:14:31.226Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-85f5-6xr3-q76r",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/capstone-engine/capstone/security/advisories/GHSA-85f5-6xr3-q76r"
        },
        {
          "name": "https://github.com/capstone-engine/capstone/commit/2c7797182a1618be12017d7d41e0b6581d5d529e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/capstone-engine/capstone/commit/2c7797182a1618be12017d7d41e0b6581d5d529e"
        }
      ],
      "source": {
        "advisory": "GHSA-85f5-6xr3-q76r",
        "discovery": "UNKNOWN"
      },
      "title": "Capstone doesn\u0027t check vsnprintf return in SStream_concat, allows stack buffer underflow and overflow"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-68114",
    "datePublished": "2025-12-17T21:14:31.226Z",
    "dateReserved": "2025-12-15T16:16:22.744Z",
    "dateUpdated": "2025-12-18T15:09:11.561Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

alsa-2026:4898

Vulnerability from osv_almalinux

CVE-2025-67873 (GCVE-0-2025-67873)

CVE-2025-68114 (GCVE-0-2025-68114)

Tags

Sightings

Nomenclature