CriticalFix available
zlib, zlib-ng — security advisory
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).
- Products
- zlib, zlib-ng
- Affected versions
- Not specified
- Fixed versions
- 1.2.11-r4, 1.2.12-r2, 2.0.6-r0
- CVEs
- CVE-2022-37434
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:14 UTC · Revision 1
Source evidence
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).
osv:ALPINE-CVE-2022-37434
zlib
Fixed versions: 1.2.11-r4
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib
Fixed versions: 1.2.12-r2
zlib-ng
Fixed versions: 2.0.6-r0
zlib-ng
Fixed versions: 2.0.6-r0
Complete source record
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"modified": "2026-10-15T07:17:54.242069544Z",
"provider": "osv",
"upstream": [
"CVE-2022-37434"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2022-37434"
]
},
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{
"value": "CVE-2022-37434",
"evidence": "/upstream"
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],
"security_relevant": true,
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"source_id": "core-osv",
"document_id": 321938,
"published_at": "2022-08-05T07:15:07.24+00:00"
}