CVE-2026-91782Hinoki check available

Local linker crash via null dereference

Published Sep 15, 2026 · Updated Sep 15, 2026

Null pointer dereference in GNU Binutils 2.47 allows local users to crash the GNU linker via a crafted x86 ELF input file. The elf_x86_allocate_dynrelocs function in bfd/elfxx-x86.c dereferences a null value while allocating dynamic relocations; the specific malformed field is undisclosed. Exploitation requires local invocation of ld with the crafted input, and the bounded consequence is termination of that linker process.

CVSS severityUnavailable
Unscored
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Null pointer dereference in GNU Binutils 2.47 allows local users to crash the GNU linker via a crafted x86 ELF input file. The elf_x86_allocate_dynrelocs function in bfd/elfxx-x86.c dereferences a null value while allocating dynamic relocations; the specific malformed field is undisclosed. Exploitation requires local invocation of ld with the crafted input, and the bounded consequence is termination of that linker process.

The record

CVE
CVE-2026-91782
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
The GnuPG Project
Product
GNU Binutils
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=2.47

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The GnuPG Project · GNU Binutilsversion=2.47

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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