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TI-2026-11498 Aliases CVE-2026-13573GHSA-p6v6-grg5-r9mw

llvm llvm-project ValueSymbolTable ValueSymbolTable.cpp insert stack-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, 8 without a fix

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

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00173 6th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Partial Red Hat: 2 advisoriesRed Hat: 1 fixed, 8 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 AI Inference ServerAffectedNo fix yet: Fix deferred
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 Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 4AffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 5AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesFixed RHSA-2026:24069, RHSA-2026:7634
Not affected: 1 product
  • Red Hat Hardened Images

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-13573
  2. 2026-10-03 Alias added: GHSA-p6v6-grg5-r9mw
  3. 2026-10-31 Affected versions changed · Red Hat

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-2026-11499 llvm llvm-project Bitcode File IntrinsicInst.cpp getBasePtr heap-based overflow CVSS 4.0MEDIUM 4.8
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences