GHSA-P2XC-G3QC-P2MQ
Vulnerability from github – Published: 2026-07-27 21:31 – Updated: 2026-09-02 12:31A flaw was found in the file-fits plugin in GIMP. When processing a FITS image file, the plugin calculates memory allocation sizes using signed 32-bit integers for width and height. If a crafted file sets both values to large values, their product exceeds 2^31 and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when cfitsio subsequently writes a full row of pixels in the buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service.
{
"affected": [],
"aliases": [
"CVE-2026-66758"
],
"database_specific": {
"cwe_ids": [
"CWE-190"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-27T19:17:23Z",
"severity": "HIGH"
},
"details": "A flaw was found in the file-fits plugin in GIMP. When processing a FITS image file, the plugin calculates memory allocation sizes using signed 32-bit integers for width and height. If a crafted file sets both values to large values, their product exceeds 2^31 and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when cfitsio subsequently writes a full row of pixels in the buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service.",
"id": "GHSA-p2xc-g3qc-p2mq",
"modified": "2026-09-02T12:31:23Z",
"published": "2026-07-27T21:31:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-66758"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:50817"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2026:62507"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-66758"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507475"
},
{
"type": "WEB",
"url": "https://gitlab.gnome.org/GNOME/gimp/-/issues/16528"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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