HighFix available
faad2 — security advisory
There is a stack-based buffer underflow in the third instance of the calculate_gain function in libfaad/sbr_hfadj.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. A crafted input will lead to a denial of service or possibly unspecified other impact because limiting the additional noise energy level is mishandled for the G_max > G case.
- Products
- faad2
- Affected versions
- Not specified
- Fixed versions
- 2.9.0-r0
- CVEs
- CVE-2018-20197
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 22:15 UTC · Revision 1
Source evidence
There is a stack-based buffer underflow in the third instance of the calculate_gain function in libfaad/sbr_hfadj.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. A crafted input will lead to a denial of service or possibly unspecified other impact because limiting the additional noise energy level is mishandled for the G_max > G case.
osv:ALPINE-CVE-2018-20197
faad2
Fixed versions: 2.9.0-r0
faad2
Fixed versions: 2.9.0-r0
faad2
Fixed versions: 2.9.0-r0
faad2
Fixed versions: 2.9.0-r0
faad2
Fixed versions: 2.9.0-r0
Complete source record
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"url": "https://osv.dev/vulnerability/ALPINE-CVE-2018-20197",
"method": "structured",
"payload": {
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"title": "ALPINE-CVE-2018-20197",
"summary": "There is a stack-based buffer underflow in the third instance of the calculate_gain function in libfaad/sbr_hfadj.c in Freeware Advanced Audio Decoder 2 (FAAD2) 2.8.8. A crafted input will lead to a denial of service or possibly unspecified other impact because limiting the additional noise energy level is mishandled for the G_max > G case.",
"evidence": "osv:ALPINE-CVE-2018-20197",
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"package": {
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"modified": "2026-10-23T17:24:37.637722569Z",
"provider": "osv",
"upstream": [
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
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"source_id": "core-osv",
"document_id": 416086,
"published_at": "2018-12-18T01:29:00.41+00:00"
}