CVE-2026-13574— llvm llvm-project Bitcode File IntrinsicInst.cpp getBasePtr heap-based overflow
Possible ATT&CK Techniques 1AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 7
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| llvm | llvm-project | 22.1.0 | affected |
22.1.1 | affected | ||
22.1.2 | affected | ||
22.1.3 | affected | ||
22.1.4 | affected | ||
22.1.5 | affected | ||
22.1.6 | affected |
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I. Basic Information for CVE-2026-13574
Vulnerability Information
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Vulnerability Title
llvm llvm-project Bitcode File IntrinsicInst.cpp getBasePtr heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in llvm llvm-project up to 22.1.6. This impacts the function GCRelocateInst::getBasePtr in the library llvm/lib/IR/IntrinsicInst.cpp of the component Bitcode File Handler. This manipulation causes heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been publicly disclosed and may be utilized. There are still doubts about whether this vulnerability truly exists. The LLVM project explains, that the reported behavior is outside its documented security scope and therefore not considered a security vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
llvm-project 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LLVM llvm-project是LLVM组织的一个开发模板与框架软件。 llvm-project 22.1.6及之前版本存在缓冲区错误漏洞，该漏洞源于Bitcode File Handler组件中函数GCRelocateInst::getBasePtr的操作，导致堆缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| llvm | llvm-project | 22.1.0 | cpe:2.3:a:llvm:llvm-project:*:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-13574
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-13574 (1)
Proof of Concept for CVE-2026-13574 (1)
Other References for CVE-2026-13574 (1)
IV. Related Vulnerabilities
Same weakness: CWE-122
V. Comments for CVE-2026-13574
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