MediumFix available
libpng1.6 — security advisory
In libpng 1.6.34, a wrong calculation of row_factor in the png_check_chunk_length function (pngrutil.c) may trigger an integer overflow and resultant divide-by-zero while processing a crafted PNG file, leading to a denial of service.
- Products
- libpng1.6
- Affected versions
- Not specified
- Fixed versions
- 1.6.34-2
- CVEs
- CVE-2018-13785
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 00:06 UTC · Revision 1
Source evidence
In libpng 1.6.34, a wrong calculation of row_factor in the png_check_chunk_length function (pngrutil.c) may trigger an integer overflow and resultant divide-by-zero while processing a crafted PNG file, leading to a denial of service.
osv:DEBIAN-CVE-2018-13785
libpng1.6
Fixed versions: 1.6.34-2
libpng1.6
Fixed versions: 1.6.34-2
libpng1.6
Fixed versions: 1.6.34-2
Complete source record
{
"id": "3b85b3883dba9323c0f355488c153ffb16fa8b61483e37337818ef217f6d487e",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-13785",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2018-13785",
"summary": "In libpng 1.6.34, a wrong calculation of row_factor in the png_check_chunk_length function (pngrutil.c) may trigger an integer overflow and resultant divide-by-zero while processing a crafted PNG file, leading to a denial of service.",
"evidence": "osv:DEBIAN-CVE-2018-13785",
"products": [
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"evidence": "/affected/0/package/name"
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{
"value": "1.6.34-2",
"evidence": "/affected/0/ranges"
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{
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{
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],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2018-13785",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
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"affected": [
{
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{
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"package": {
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"ecosystem": "Debian:13"
},
"database_specific": {
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"ecosystem_specific": {
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"package": {
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"ecosystem": "Debian:14"
},
"database_specific": {
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},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:02:58.988571981Z",
"provider": "osv",
"upstream": [
"CVE-2018-13785"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2018-13785"
]
},
"related_cves": [
{
"value": "CVE-2018-13785",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 419997,
"published_at": "2018-07-09T13:29:00.443+00:00"
}