FKIE_CVE-2026-40494

Vulnerability from fkie_nvd - Published: 2026-04-18 03:16 - Updated: 2026-10-25 23:10
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to commit 45d48d1f2e8e0d73e80bc1fd5310cb57f4547302, the TGA codec's RLE decoder in `tga.c` has an asymmetric bounds check vulnerability. The run-packet path (line 297) correctly clamps the repeat count to the remaining buffer space, but the raw-packet path (line 305-311) has no equivalent bounds check. This allows writing up to 496 bytes of attacker-controlled data past the end of a heap buffer. Commit 45d48d1f2e8e0d73e80bc1fd5310cb57f4547302 patches the issue.
References
security-advisories@github.comhttps://github.com/HappySeaFox/sail/commit/45d48d1f2e8e0d73e80bc1fd5310cb57f4547302
security-advisories@github.comhttps://github.com/HappySeaFox/sail/security/advisories/GHSA-cp2j-rwh4-r46f
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "sail",
          "vendor": "HappySeaFox",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 45d48d1f2e8e0d73e80bc1fd5310cb57f4547302"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to commit 45d48d1f2e8e0d73e80bc1fd5310cb57f4547302, the TGA codec\u0027s RLE decoder in `tga.c` has an asymmetric bounds check vulnerability. The run-packet path (line 297) correctly clamps the repeat count to the remaining buffer space, but the raw-packet path (line 305-311) has no equivalent bounds check. This allows writing up to 496 bytes of attacker-controlled data past the end of a heap buffer. Commit 45d48d1f2e8e0d73e80bc1fd5310cb57f4547302 patches the issue."
    },
    {
      "lang": "es",
      "value": "SAIL es una biblioteca multiplataforma para cargar y guardar im\u00e1genes con soporte para animaci\u00f3n, metadatos y perfiles ICC. Antes del commit 45d48d1f2e8e0d73e80bc1fd5310cb57f4547302, el decodificador RLE del c\u00f3dec TGA en \u2019tga.c\u2019 tiene una vulnerabilidad de verificaci\u00f3n de l\u00edmites asim\u00e9trica. La ruta del paquete de ejecuci\u00f3n (l\u00ednea 297) limita correctamente el recuento de repeticiones al espacio restante del b\u00fafer, pero la ruta del paquete sin procesar (l\u00ednea 305-311) no tiene una verificaci\u00f3n de l\u00edmites equivalente. Esto permite escribir hasta 496 bytes de datos controlados por el atacante m\u00e1s all\u00e1 del final de un b\u00fafer de pila. El commit 45d48d1f2e8e0d73e80bc1fd5310cb57f4547302 corrige el problema."
    }
  ],
  "id": "CVE-2026-40494",
  "lastModified": "2026-10-25T23:10:00.167",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-40494",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-20T14:47:38.934644Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-04-18T03:16:13.590",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/HappySeaFox/sail/commit/45d48d1f2e8e0d73e80bc1fd5310cb57f4547302"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/HappySeaFox/sail/security/advisories/GHSA-cp2j-rwh4-r46f"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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