UnratedFix available
libencode-perl, perl — security advisory
Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow.
- Products
- libencode-perl, perl
- Affected versions
- Not specified
- Fixed versions
- 2.44-1, 5.12.4-4
- CVEs
- CVE-2011-2939
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 23:16 UTC · Revision 1
Source evidence
Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow.
osv:DEBIAN-CVE-2011-2939
libencode-perl
Fixed versions: 2.44-1
libencode-perl
Fixed versions: 2.44-1
libencode-perl
Fixed versions: 2.44-1
perl
Fixed versions: 5.12.4-4
perl
Fixed versions: 5.12.4-4
perl
Fixed versions: 5.12.4-4
Complete source record
{
"id": "7a38835d9c22fb240a8b98ec2f06412cd932cfcc3d7e4cfb96053c0b15d54e4f",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2011-2939",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2011-2939",
"summary": "Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow.",
"evidence": "osv:DEBIAN-CVE-2011-2939",
"products": [
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},
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"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
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{
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{
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"severity": "unknown",
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"aliases": [
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{
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],
"package": {
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},
"ecosystem_specific": {
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}
],
"modified": "2026-10-23T17:47:39.189068412Z",
"provider": "osv",
"upstream": [
"CVE-2011-2939"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2011-2939"
]
},
"related_cves": [
{
"value": "CVE-2011-2939",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 418161,
"published_at": "2012-01-13T18:55:02.987+00:00"
}