Medium
Security advisory
A buffer over-read exists in the function crc64ib in crc64.c in nasmlib in Netwide Assembler (NASM) 2.14rc16. A crafted asm input can cause segmentation faults, leading to denial-of-service.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-7147
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:13 UTC · Revision 1
Source evidence
A buffer over-read exists in the function crc64ib in crc64.c in nasmlib in Netwide Assembler (NASM) 2.14rc16. A crafted asm input can cause segmentation faults, leading to denial-of-service.
osv:CVE-2019-7147
Complete source record
{
"id": "3efee310b0695f365c0063d59833b54e1f4fa1f2ace40551f234deb70d21a0f6",
"url": "https://osv.dev/vulnerability/CVE-2019-7147",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-7147",
"summary": "A buffer over-read exists in the function crc64ib in crc64.c in nasmlib in Netwide Assembler (NASM) 2.14rc16. A crafted asm input can cause segmentation faults, leading to denial-of-service.",
"evidence": "osv:CVE-2019-7147",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-7147",
"aliases": [
"CVE-2019-7147"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/netwide-assembler/nasm",
"type": "GIT",
"events": [
{
"introduced": "28b69e2a633a850e724f309a5ec81bac8638084a"
},
{
"last_affected": "28b69e2a633a850e724f309a5ec81bac8638084a"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:nasm:netwide_assembler:2.14:rc16:*:*:*:*:*:*",
"range": [
{
"introduced": "2.14-rc16"
},
{
"last_affected": "2.14-rc16"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"2.14-rc16",
"nasm-2.14rc16"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-7147.json"
}
}
],
"modified": "2026-10-24T10:30:15.462455956Z",
"provider": "osv",
"references": [
"https://bugzilla.nasm.us/show_bug.cgi?id=3392544"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2019-7147",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 429162,
"published_at": "2019-01-29T00:29:00.313+00:00"
}