Low
llvm-toolchain-18, llvm-toolchain-19 and 2 more products — security advisory
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
- llvm-toolchain-18, llvm-toolchain-19, llvm-toolchain-21, llvm-toolchain-22
- Affected versions
- 1:18.1.0~++20240126095841+0991d3c7b53d-1~exp1, 1:18.1.0~rc1-1, 1:18.1.0~rc2-3, 1:18.1.0~rc2-4, 1:18.1.2-1ubuntu2, 1:18.1.2-1ubuntu3, 1:18.1.3-1, 1:18.1.3-1ubuntu1, 1:18.1.8-11~20.04.2, 1:18.1.8-17, 1:18.1.8-18, 1:18.1.8-18build1, 1:18.1.8-18ubuntu1, 1:18.1.8-18ubuntu2, 1:18.1.8-20ubuntu11, 1:18.1.8-20ubuntu2, 1:18.1.8-20ubuntu4, 1:18.1.8-20ubuntu5, 1:18.1.8-20ubuntu8, 1:19.1.1-1ubuntu1~24.04.2, 1:19.1.7-10ubuntu1, 1:19.1.7-16ubuntu1, 1:19.1.7-19ubuntu2, 1:19.1.7-20ubuntu1, 1:19.1.7-20ubuntu4, 1:19.1.7-20ubuntu8, 1:19.1.7-3ubuntu1, 1:19.1.7-3ubuntu2, 1:19.1.7-5ubuntu1, 1:19.1.7-5ubuntu2, 1:19.1.7-6ubuntu3, 1:19.1.7-7ubuntu1, 1:21.1.0-1, 1:21.1.2-2ubuntu6, 1:21.1.6-3ubuntu1, 1:21.1.7-1ubuntu2, 1:21.1.8-10ubuntu2, 1:21.1.8-1ubuntu1, 1:21.1.8-3ubuntu1, 1:21.1.8-4ubuntu2, 1:21.1.8-6ubuntu1, 1:22.1.0-2ubuntu1, 1:22.1.0~+rc3-0ubuntu2, 1:22.1.1-1ubuntu1, 1:22.1.2-1ubuntu1, 1:22.1.6-1ubuntu1, 1:22.1.6-1ubuntu4, 1:22.1.8-1ubuntu1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-13573
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:41 UTC · Revision 1
Source evidence
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:UBUNTU-CVE-2026-13573
llvm-toolchain-18
Fixed versions: Not specified
llvm-toolchain-18
Fixed versions: Not specified
llvm-toolchain-19
Fixed versions: Not specified
llvm-toolchain-18
Fixed versions: Not specified
llvm-toolchain-19
Fixed versions: Not specified
llvm-toolchain-21
Fixed versions: Not specified
llvm-toolchain-18
Fixed versions: Not specified
llvm-toolchain-19
Fixed versions: Not specified
llvm-toolchain-21
Fixed versions: Not specified
llvm-toolchain-22
Fixed versions: Not specified
llvm-toolchain-18
Fixed versions: Not specified
llvm-toolchain-19
Fixed versions: Not specified
llvm-toolchain-21
Fixed versions: Not specified
llvm-toolchain-22
Fixed versions: Not specified
Complete source record
{
"id": "9cd978035bf2dc88b74e5f308f03d1c3cc575f99e272908a08e331d4e32c0948",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-13573",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-13573",
"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:UBUNTU-CVE-2026-13573",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"value": "1:21.1.8-3ubuntu1",
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{
"value": "1:21.1.8-4ubuntu2",
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{
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{
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],
"severity": "low",
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"aliases": [
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"metrics": [
{
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},
{
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{
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"modified": "2026-10-17T12:58:45.828828150Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-13573",
"https://www.cve.org/CVERecord?id=CVE-2026-13573",
"https://github.com/llvm/llvm-project/",
"https://github.com/user-attachments/files/28141697/poc.zip",
"https://vuldb.com/cve/CVE-2026-13573",
"https://vuldb.com/submit/844457",
"https://vuldb.com/vuln/374581",
"https://vuldb.com/vuln/374581/cti"
]
},
"related_cves": [
{
"value": "CVE-2026-13573",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 359024,
"published_at": "2026-06-29T15:16:00+00:00"
}