llvm llvm-project ValueSymbolTable ValueSymbolTable.cpp insert stack-based overflow
A vulnerability was found in llvm llvm-project up to 22.1.6. This affects the function llvm::StringMap::insert in the library /lib/IR/ValueSymbolTable.cpp of the component ValueSymbolTable Module. The manipulation results in stack-based buffer overflow. Attacking locally is a requirement. The exploit has been made public and could be used. The presence of this vulnerability remains uncertain at this time. The LLVM project explains, that the reported behavior is outside its documented security scope and therefore not considered a security vulnerability.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-13573
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 07:13 UTC · Revision 1
Source evidence
llvm llvm-project ValueSymbolTable ValueSymbolTable.cpp insert stack-based overflow
core-osv · Original sourcePublished 29 Jun 2026, 14:00 UTC
A vulnerability was found in llvm llvm-project up to 22.1.6. This affects the function llvm::StringMap::insert in the library /lib/IR/ValueSymbolTable.cpp of the component ValueSymbolTable Module. The manipulation results in stack-based buffer overflow. Attacking locally is a requirement. The exploit has been made public and could be used. The presence of this vulnerability remains uncertain at this time. The LLVM project explains, that the reported behavior is outside its documented security scope and therefore not considered a security vulnerability.
osv:CVE-2026-13573
Complete source record
{
"id": "c115196c7b8b2a3aba023a9dee15f5b97810b81ba9ef9a22e39e24a9914dbfab",
"url": "https://osv.dev/vulnerability/CVE-2026-13573",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "llvm llvm-project ValueSymbolTable ValueSymbolTable.cpp insert stack-based overflow",
"summary": "A vulnerability was found in llvm llvm-project up to 22.1.6. This affects the function llvm::StringMap::insert in the library /lib/IR/ValueSymbolTable.cpp of the component ValueSymbolTable Module. The manipulation results in stack-based buffer overflow. Attacking locally is a requirement. The exploit has been made public and could be used. The presence of this vulnerability remains uncertain at this time. The LLVM project explains, that the reported behavior is outside its documented security scope and therefore not considered a security vulnerability.",
"evidence": "osv:CVE-2026-13573",
"products": [],
"severity": "low",
"structured": {
"id": "CVE-2026-13573",
"aliases": [
"CVE-2026-13573"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/llvm/llvm-project",
"type": "GIT",
"events": [
{
"introduced": "4434dabb69916856b824f68a64b029c67175e532"
},
{
"last_affected": "fc4aad7b5db3fff421df9a9637605b9ca5667881"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "22.1.0"
},
{
"last_affected": "22.1.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
},
{
"range": [
{
"introduced": "22.1.1"
},
{
"last_affected": "22.1.1"
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],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
},
{
"range": [
{
"introduced": "22.1.2"
},
{
"last_affected": "22.1.2"
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],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
},
{
"range": [
{
"introduced": "22.1.3"
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{
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"source": "AFFECTED_FIELD",
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{
"range": [
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{
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"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
},
{
"range": [
{
"introduced": "22.1.5"
},
{
"last_affected": "22.1.5"
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],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
},
{
"range": [
{
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{
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"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
},
{
"range": [
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{
"last_affected": "22.1.6"
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"source": "DESCRIPTION"
}
]
}
}
],
"versions": [
"22.1.0",
"22.1.1",
"22.1.2",
"22.1.3",
"22.1.4",
"22.1.5",
"22.1.6",
"llvmorg-22.1.6",
"llvmorg-22.1.5",
"llvmorg-22.1.4",
"llvmorg-22.1.3",
"llvmorg-22.1.2",
"llvmorg-22.1.1",
"llvmorg-22.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-13573.json"
}
}
],
"modified": "2026-10-28T02:30:50.166583431Z",
"provider": "osv",
"references": [
"https://github.com/llvm/llvm-project/",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/13xxx/CVE-2026-13573.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-13573",
"https://vuldb.com/cve/CVE-2026-13573",
"https://vuldb.com/submit/844457",
"https://vuldb.com/vuln/374581",
"https://github.com/llvm/llvm-project/issues/199187",
"https://vuldb.com/vuln/374581/cti",
"https://github.com/user-attachments/files/28141697/poc.zip"
],
"provider_metadata": {
"cwe_ids": [
"CWE-119",
"CWE-121"
],
"isDisputed": true,
"cna_assigner": "VulDB",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/13xxx/CVE-2026-13573.json"
}
},
"related_cves": [
{
"value": "CVE-2026-13573",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 518616,
"published_at": "2026-06-29T14:00:09.309+00:00"
}