CVE-2026-13574 Details
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.
A heap-based buffer overflow vulnerability has been identified in the LLVM project, specifically in versions through 22.1.6. The issue arises in the Bitcode File Handler component, within the function GCRelocateInst::getBasePtr, located in the file llvm/lib/IR/IntrinsicInst.cpp. The vulnerability allows for memory corruption by manipulating operand bundle inputs or statepoint arguments without proper bounds checking. This flaw can be exploited locally, and has been publicly disclosed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jun 29, 2026CISA-ADP
Assessed Jul 1, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/llvm/llvm-project/issues/199191 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/llvm/llvm-project/ | [email protected] | Source CodeVendor |
| https://github.com/llvm/llvm-project/issues/199191 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/user-attachments/files/28142619/poc.zip | [email protected] | Broken LinkExploit |
| https://vuldb.com/cve/CVE-2026-13574 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/844468 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/374582 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/374582/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-122 | Heap-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| LLVM | <= 22.1.6 (semver) |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 7, 2026 | CVE Modified | [email protected] |
| Jul 1, 2026 | CVE Modified | CISA-ADP |
| Jun 29, 2026 | New CVE Received | [email protected] |