PT-2026-53279 · Unknown · Llvm-Project

Tygls · Published 2026-06-29 · Updated 2026-06-29 · CVE-2026-13574

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions llvm-project versions prior to 22.1.7

Description A heap-based buffer overflow occurs in the Bitcode File Handler component within the library llvm/lib/IR/IntrinsicInst.cpp. The issue is located in the GCRelocateInst::getBasePtr() function and can be exploited by a local attacker.

Recommendations Update llvm-project to version 22.1.7 or later. As a temporary mitigation, restrict access to the GCRelocateInst::getBasePtr() function.

Exploit

Fix

Buffer Overflow

Heap Based Buffer Overflow

Weakness Enumeration

CWE-119

CWE-122

Related Identifiers

CVE-2026-13574

Affected Products

Llvm-Project

References · 9

• 🔥 https://github.com/user-attachments/files/28142619/poc.zip · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-13574 · Security Note
• https://vuldb.com/cve/CVE-2026-13574 · Note
• https://vuldb.com/submit/844468 · Note
• https://github.com/llvm/llvm-project · Note
• https://twitter.com/CVEnew/status/2071643310293201044 · Twitter Post
• https://vuldb.com/vuln/374582/cti · Note
• https://github.com/llvm/llvm-project/issues/199191 · Note
• https://vuldb.com/vuln/374582 · Note