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TI-2026-11499 Aliases CVE-2026-13574GHSA-pf97-7r98-qpj7

llvm llvm-project Bitcode File IntrinsicInst.cpp getBasePtr heap-based overflow

Priority MEDIUM 55CWE-119Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · None · Low
Fix status
Partial Red Hat: 1 fixed, 4 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00177 7th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Partial Red Hat: 2 advisoriesRed Hat: 1 fixed, 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
llvmllvm-project22.1.0; 22.1.1; 22.1.2; 22.1.3; 22.1.4; 22.1.5; 22.1.6—No fix listedCNA
  • llvm-project Vendorllvm Affected 22.1.0; 22.1.1; 22.1.2; 22.1.3; 22.1.4; 22.1.5; 22.1.6 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:llvm:llvm-project:*:*:*:*:*:*:*:*——llvm
  • cpe:2.3:a:llvm:llvm-project:*:*:*:*:*:*:*:* Versions — — ·llvm

Remediation

Red Hat 2 advisories

  • RHSA-2026:24069 Released 2026-06-07 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images clang21-21.1.8-6.hum1@aarch64, clang21-21.1.8-6.hum1@x86_64, clang21-analyzer-21.1.8-6.hum1@aarch64 +47
  • RHSA-2026:7634 Released 2026-04-11 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images clang-21.1.8-1.1.hum1@aarch64, clang-21.1.8-1.1.hum1@x86_64, clang-analyzer-21.1.8-1.1.hum1@aarch64 +47

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:24069, RHSA-2026:7634
Not affected: 4 products
  • Red Hat AI Inference Server
  • Red Hat Enterprise Linux AI (RHEL AI) 3
  • Red Hat Hardened Images
  • Red Hat OpenShift AI (RHOAI)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-13574
  2. 2026-10-03 Alias added: GHSA-pf97-7r98-qpj7

References

Exploit 1

Other 2

  • TI-2023-14087 llvm-project commit a0138390 was discovered to contain a segmentation fault via the… CVSS 3.1MEDIUM 5.5
  • TI-2023-14085 llvm-project commit a0138390 was discovered to contain an assertion failure at… CVSS 3.1MEDIUM 5.5
  • TI-2023-14084 llvm-project commit 6c01b5c was discovered to contain a segmentation fault via the component mlir::Type::getDialect(). CVSS 3.1MEDIUM 5.5
  • TI-2023-14083 llvm-project commit bd456297 was discovered to contain a segmentation fault via the component mlir::Block::getArgument. CVSS 3.1MEDIUM 5.5
  • TI-2023-14082 llvm-project commit fdbc55a5 was discovered to contain a segmentation fault via the… CVSS 3.1MEDIUM 5.5
  • TI-2026-11498 llvm llvm-project ValueSymbolTable ValueSymbolTable.cpp insert stack-based overflow CVSS 4.0MEDIUM 4.8
See all 10 →

Sources

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