CriticalFix available
zbar — security advisory
A stack-based buffer overflow vulnerability exists in the lookup_sequence function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.
- Products
- zbar
- Affected versions
- 0.23-1.1, 0.23-1.2, 0.23-1.3, 0.23.90-1, 0.23.92-4, 0.23.92-4build2, 0.23.93-7, 0.23.93-8, 0.23.93-9ubuntu1, 0.23.93-9ubuntu2
- Fixed versions
- 0.23-1.3ubuntu0.1~esm1, 0.23.92-4ubuntu0.1~esm1
- CVEs
- CVE-2023-40890
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:04 UTC · Revision 1
Source evidence
A stack-based buffer overflow vulnerability exists in the lookup_sequence function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.
osv:UBUNTU-CVE-2023-40890
zbar
Fixed versions: 0.23-1.3ubuntu0.1~esm1
zbar
Fixed versions: 0.23.92-4ubuntu0.1~esm1
zbar
Fixed versions: Not specified
zbar
Fixed versions: Not specified
zbar
Fixed versions: Not specified
Complete source record
{
"id": "eac76e40cbfc91e77695425af55c1319e9d66585afa84912db9b0cd7ae32b941",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2023-40890",
"method": "structured",
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"summary": "A stack-based buffer overflow vulnerability exists in the lookup_sequence function of ZBar 0.23.90. Specially crafted QR codes may lead to information disclosure and/or arbitrary code execution. To trigger this vulnerability, an attacker can digitally input the malicious QR code, or prepare it to be physically scanned by the vulnerable scanner.",
"evidence": "osv:UBUNTU-CVE-2023-40890",
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{
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{
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},
"versions": [
"0.23.90-1",
"0.23.92-4",
"0.23.92-4build2"
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{
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{
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"versions": [
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"ecosystem_specific": {
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],
"modified": "2026-10-17T12:56:25.037831426Z",
"provider": "osv",
"upstream": [
"CVE-2023-40890"
],
"references": [
"https://ubuntu.com/security/CVE-2023-40890",
"https://hackmd.io/@cspl/H1PxPAUnn",
"https://www.cve.org/CVERecord?id=CVE-2023-40890",
"https://ubuntu.com/security/notices/USN-7118-1"
]
},
"related_cves": [
{
"value": "CVE-2023-40890",
"evidence": "/upstream"
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"security_relevant": true,
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"source_id": "core-osv",
"document_id": 355605,
"published_at": "2023-08-29T17:15:00+00:00"
}