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    2 vulnerabilities found for libschrift by tomolt

    CVE-2026-110605 (GCVE-0-2026-110605)

    Vulnerability from nvd – Published: 2026-10-14 14:16 – Updated: 2026-10-14 14:16
    VLAI
    Title
    libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line
    Summary
    libschrift through 0.10.2 contains a divide by zero vulnerability that allows attackers to crash applications by supplying a font with unitsPerEm of 0 in the head table. Attackers can provide a crafted TrueType font whose NaN glyph coordinates bypass clip_points(), causing an out-of-bounds raster read in draw_line() during sft_render() and crashing the process.
    Severity
    6.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
    5.5 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    CWE
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 6106 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    tomolt libschrift Affected: 0 , ≤ 0.10.2 (semver)
    		Create a notification for this product.
    Date Public
    2026-10-02 00:00
    Credits
    WTCYJ HaiND from the Post and Telecommunication Institute of Technology
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/tomolt/libschrift",
          "defaultStatus": "unaffected",
          "product": "libschrift",
          "repo": "https://github.com/tomolt/libschrift",
          "vendor": "tomolt",
          "versions": [
            {
              "lessThanOrEqual": "0.10.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "WTCYJ"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-02T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "libschrift through 0.10.2 contains a divide by zero vulnerability that allows attackers to crash applications by supplying a font with unitsPerEm of 0 in the head table. Attackers can provide a crafted TrueType font whose NaN glyph coordinates bypass clip_points(), causing an out-of-bounds raster read in draw_line() during sft_render() and crashing the process."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-369",
              "description": "Divide By Zero",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-14T14:16:45.714Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/tomolt/libschrift/issues/46"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://hackmd.io/@haind-pwn/libschrift-unitsperem-zero-oob"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L542"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L1422-L1503"
        },
        {
          "name": "VulnCheck Advisory: libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/libschrift-through-0.10.2-divide-by-zero-via-unitsperem-in-draw-line"
        }
      ],
      "title": "libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-110605",
    "datePublished": "2026-10-14T14:16:45.714Z",
    "dateReserved": "2026-10-14T13:07:21.881Z",
    "dateUpdated": "2026-10-14T14:16:45.714Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

    CVE-2026-110605 (GCVE-0-2026-110605)

    Vulnerability from cvelistv5 – Published: 2026-10-14 14:16 – Updated: 2026-10-14 14:16
    VLAI
    Title
    libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line
    Summary
    libschrift through 0.10.2 contains a divide by zero vulnerability that allows attackers to crash applications by supplying a font with unitsPerEm of 0 in the head table. Attackers can provide a crafted TrueType font whose NaN glyph coordinates bypass clip_points(), causing an out-of-bounds raster read in draw_line() during sft_render() and crashing the process.
    Severity
    6.8 (Medium)
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
    5.5 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    CWE
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 6106 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    tomolt libschrift Affected: 0 , ≤ 0.10.2 (semver)
    		Create a notification for this product.
    Date Public
    2026-10-02 00:00
    Credits
    WTCYJ HaiND from the Post and Telecommunication Institute of Technology
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/tomolt/libschrift",
          "defaultStatus": "unaffected",
          "product": "libschrift",
          "repo": "https://github.com/tomolt/libschrift",
          "vendor": "tomolt",
          "versions": [
            {
              "lessThanOrEqual": "0.10.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "WTCYJ"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "HaiND from the Post and Telecommunication Institute of Technology"
        }
      ],
      "datePublic": "2026-10-02T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "libschrift through 0.10.2 contains a divide by zero vulnerability that allows attackers to crash applications by supplying a font with unitsPerEm of 0 in the head table. Attackers can provide a crafted TrueType font whose NaN glyph coordinates bypass clip_points(), causing an out-of-bounds raster read in draw_line() during sft_render() and crashing the process."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "LOCAL",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-369",
              "description": "Divide By Zero",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-14T14:16:45.714Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/tomolt/libschrift/issues/46"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://hackmd.io/@haind-pwn/libschrift-unitsperem-zero-oob"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L542"
        },
        {
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/tomolt/libschrift/blob/v0.10.2/schrift.c#L1422-L1503"
        },
        {
          "name": "VulnCheck Advisory: libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line",
          "tags": [
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          ],
          "url": "https://www.vulncheck.com/advisories/libschrift-through-0.10.2-divide-by-zero-via-unitsperem-in-draw-line"
        }
      ],
      "title": "libschrift through 0.10.2 Divide by Zero via unitsPerEm in draw_line",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
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  },
  "cveMetadata": {
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    "cveId": "CVE-2026-110605",
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    "dateReserved": "2026-10-14T13:07:21.881Z",
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