{
  "schema_version": "1.7.0",
  "id": "MGASA-2026-0295",
  "published": "2026-07-25T18:04:08Z",
  "modified": "2026-07-25T16:52:27Z",
  "summary": "Updated giflib packages fix a security vulnerability",
  "details": "The updated packages fix a security vulnerability:\nBuffer Overflow vulnerability in giflib v.5.2.2 allows a remote attacker\nto cause a denial of service via the EGifGCBToExtension overwriting an\nexisting Graphic Control Extension block without validating its\nallocated size. (CVE-2026-26740)\n",
  "upstream": [
    "CVE-2026-26740"
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://advisories.mageia.org/MGASA-2026-0295.html"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.mageia.org/show_bug.cgi?id=35614"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AG6LRGR6CTYC6R6KKFK2YTY2NJNGE62F/"
    },
    {
      "type": "WEB",
      "url": "https://github.com/zakkanijia/POC/blob/main/giflib/giftool/giflib_giftool_gce_len_heap_oobwrite_disclosure.md"
    },
    {
      "type": "REPORT",
      "url": "https://sourceforge.net/p/giflib/bugs/199/"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Mageia:10",
        "name": "giflib",
        "purl": "pkg:rpm/mageia/giflib?arch=source&distro=mageia-10"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.2.2-4.1.mga10"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    },
    {
      "package": {
        "ecosystem": "Mageia:9",
        "name": "giflib",
        "purl": "pkg:rpm/mageia/giflib?arch=source&distro=mageia-9"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.2.1-7.4.mga9"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    }
  ],
  "credits": [
    {
      "name": "Mageia",
      "type": "COORDINATOR",
      "contact": [
        "https://wiki.mageia.org/en/Packages_Security_Team"
      ]
    }
  ]
}