sail — security advisory

{
  "id": "d8995d6a4bfc02a28f746a4d31520d45b12f02af4d1d4694bd1d4347d0a29d93",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-40492",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-40492",
    "summary": "SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to commit 36aa5c7ec8a2bb35f6fb867a1177a6f141156b02, the XWD codec resolves pixel format based on `pixmap_depth` but the byte-swap code uses `bits_per_pixel` independently. When `pixmap_depth=8` (BPP8_INDEXED, 1 byte/pixel buffer) but `bits_per_pixel=32`, the byte-swap loop accesses memory as `uint32_t*`, reading/writing 4x the allocated buffer size. This is a different vulnerability from the previously reported GHSA-3g38-x2pj-mv55 (CVE-2026-27168), which addressed `bytes_per_line` validation. Commit 36aa5c7ec8a2bb35f6fb867a1177a6f141156b02 contains a patch.",
    "evidence": "osv:DEBIAN-CVE-2026-40492",
    "products": [
      {
        "name": {
          "value": "sail",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.9.10-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.9.10-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.9.10-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.9.8-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.9.8-1+deb13u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.9.9-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.2.0-1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "sail",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.9.10-2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "0.9.10-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.9.8-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.9.9-1",
            "evidence": "/affected/1/versions"
          }
        ]
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "DEBIAN-CVE-2026-40492",
      "aliases": [
        "DEBIAN-CVE-2026-40492"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "sail",
            "purl": "pkg:deb/debian/sail?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "0.9.10-1",
            "0.9.10-2",
            "0.9.10-3",
            "0.9.8-1",
            "0.9.8-1+deb13u1",
            "0.9.9-1",
            "1.2.0-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40492.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.9.10-2"
                }
              ]
            }
          ],
          "package": {
            "name": "sail",
            "purl": "pkg:deb/debian/sail?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "0.9.10-1",
            "0.9.8-1",
            "0.9.9-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40492.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-27T09:47:34.037996232Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-40492"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-40492"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-40492",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 461159,
  "published_at": "2026-04-18T03:16:13.3+00:00"
}