HighFix available
heimdal — security advisory
The fix for CVE-2022-3437 included changing memcmp to be constant time and a workaround for a compiler bug by adding "!= 0" comparisons to the result of memcmp. When these patches were backported to the heimdal-7.7.1 and heimdal-7.8.0 branches (and possibly other branches) a logic inversion sneaked in causing the validation of message integrity codes in gssapi/arcfour to be inverted.
- Products
- heimdal
- Affected versions
- Not specified
- Fixed versions
- 7.7.1-r0, 7.7.1-r1, 7.8.0-r1, 7.8.0-r2
- CVEs
- CVE-2022-45142
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:19 UTC · Revision 1
Source evidence
The fix for CVE-2022-3437 included changing memcmp to be constant time and a workaround for a compiler bug by adding "!= 0" comparisons to the result of memcmp. When these patches were backported to the heimdal-7.7.1 and heimdal-7.8.0 branches (and possibly other branches) a logic inversion sneaked in causing the validation of message integrity codes in gssapi/arcfour to be inverted.
osv:ALPINE-CVE-2022-45142
heimdal
Fixed versions: 7.7.1-r1
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.8.0-r1
heimdal
Fixed versions: 7.8.0-r2
heimdal
Fixed versions: 7.8.0-r2
heimdal
Fixed versions: 7.8.0-r2
heimdal
Fixed versions: 7.8.0-r2
heimdal
Fixed versions: 7.8.0-r2
heimdal
Fixed versions: 7.8.0-r2
heimdal
Fixed versions: 7.8.0-r2
Complete source record
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"modified": "2026-10-15T07:17:54.274910580Z",
"provider": "osv",
"upstream": [
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"references": [
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]
},
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"security_relevant": true,
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"source_id": "core-osv",
"document_id": 322054,
"published_at": "2023-03-06T23:15:11.233+00:00"
}