In ImageMagick 7.0.7-29 and earlier, a missing NULL check in ReadOneJNGImage in coders/png.c allows an attacker to cause a denial of service (WriteBlob assertion failure and application exit) via a crafted file.
{
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"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
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{
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"cpes": [
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{
"source": "CPE_STRING",
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"extracted_events": [
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"introduced": "8.0"
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{
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}{
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "7.0.0-0"
},
{
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}{
"source": [
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"cpe": "cpe:2.3:a:imagemagick:imagemagick:*:*:*:*:*:*:*:*",
"extracted_events": [
{
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{
"fixed": "6.9.9-42"
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}"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-16749.json"
[
{
"id": "CVE-2018-16749-c74ff6cf",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://github.com/imagemagick/imagemagick6/commit/1007b98f8795ad4bea6bc5f68a32d83e982fdae4",
"deprecated": false,
"digest": {
"threshold": 0.9,
"line_hashes": [
"298871696389629155284717183490975032472",
"28410204597529120706238128142211346520",
"266622275964940873483939931408488320853",
"242540208099304219285832213890642484568"
]
},
"target": {
"file": "coders/png.c"
}
},
{
"id": "CVE-2018-16749-fc5a5880",
"signature_type": "Function",
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"source": "https://github.com/imagemagick/imagemagick6/commit/1007b98f8795ad4bea6bc5f68a32d83e982fdae4",
"deprecated": false,
"digest": {
"function_hash": "4859487235691391041003765874819701615",
"length": 14962.0
},
"target": {
"function": "ReadOneJNGImage",
"file": "coders/png.c"
}
}
]
"2026-07-08T19:44:17Z"