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TI-2026-61993 Aliases CVE-2026-91782GHSA-vqfr-4h6g-3q8x

GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x86_allocate_dynrelocs null pointer dereference

Priority MEDIUM 55CWE-404Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-404.

Summary

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00175 7th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD and the CNA
Fix Fixed Binutils (GNU): 2.48Red Hat: 1 advisory

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
GNUBinutils2.472.48Patch availableCNA
  • Binutils VendorGNU Affected 2.47 Fixed in 2.48 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gnu:binutils:2.47:*:*:*:*:*:*:*2.47VulnerableGNU
  • cpe:2.3:a:gnu:binutils:2.47:*:*:*:*:*:*:* Versions 2.47 Vulnerable ·GNU

Remediation

  • Fix · CNA Binutils (GNU) Fixed in 2.48

Red Hat 1 advisory

  • RHSA-2026:67961 Released 2026-09-16 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs Security Update
    • Red Hat Hardened Images binutils-2.46.1-1.2.hum1@aarch64, binutils-2.46.1-1.2.hum1@src, binutils-2.46.1-1.2.hum1@x86_64 +6

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Hardened ImagesFixed RHSA-2026:67961

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-91782
  2. 2026-10-03 Alias added: GHSA-vqfr-4h6g-3q8x
  3. 2026-10-20 Fix available: RHSA-2026:67961 · Red Hat
  4. 2026-10-20 Fix available: Red Hat Hardened Images · Red Hat
  5. 2026-10-20 CVSS score added · Red Hat

References

Exploit 2

Other 1

  • TI-2020-13695 An issue was discovered in binutils libbfd.c 2.36 relating to the auxiliary symbol data… CVSS 3.1HIGH 8.8
  • TI-2025-42907 GNU Binutils thru 2.46 readelf contains a double free vulnerability when processing a… CVSS 3.1HIGH 7.5
  • TI-2025-41071 An issue was discovered in function d_print_comp_inner in file cp-demangle.c in BinUtils… CVSS 3.1HIGH 7.5
  • TI-2025-41069 An issue was discovered in function d_discriminator in file cp-demangle.c in BinUtils… CVSS 3.1HIGH 7.5
  • TI-2025-41068 A buffer overflow vulnerability in function gnu_special in file cplus-dem.c in BinUtils… CVSS 3.1HIGH 7.5
  • TI-2021-21105 Heap-based Buffer Overflow in function bfd_getl32 in Binutils objdump 3.37. CVSS 3.1HIGH 7.5
See all 287 →

Sources

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