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binutils readelf CVE-2026-6845

| EUVDEUVD-2026-24712 MEDIUM
NULL Pointer Dereference (CWE-476)
2026-04-22 redhat GHSA-chmq-57c3-4p7v
5.0
CVSS 3.1 · Vendor: redhat
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Severity by source

Vendor (redhat) PRIMARY
5.0 MEDIUM
AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
SUSE
3.1 LOW
AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Red Hat
5.0 MEDIUM
qualitative

Primary rating from Vendor (redhat).

CVSS VectorVendor: redhat

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

5
Patch released
Apr 29, 2026 - 02:30 nvd
Patch available
Analysis Generated
Apr 22, 2026 - 10:03 vuln.today
EUVD ID Assigned
Apr 22, 2026 - 08:30 euvd
EUVD-2026-24712
Analysis Generated
Apr 22, 2026 - 08:30 vuln.today
CVE Published
Apr 22, 2026 - 07:54 nvd
MEDIUM 5.0

DescriptionCVE.org

A flaw was found in binutils, specifically within the readelf utility. This vulnerability allows a local attacker to cause a Denial of Service (DoS) by tricking a user into processing a specially crafted Executable and Linkable Format (ELF) file. The exploitation of this flaw can lead to the system becoming unresponsive due to excessive resource consumption or a program crash.

AnalysisAI

The readelf utility in binutils is vulnerable to denial of service through null pointer dereference when processing specially crafted ELF files. A local attacker with limited privileges can trigger excessive resource consumption or program crashes by convincing a user to process a malicious ELF binary, affecting Red Hat Enterprise Linux 6, 7, 8, and 10. No public exploit code or active exploitation has been confirmed at this time.

Technical ContextAI

binutils is a collection of binary tools including readelf, which parses and displays information from ELF (Executable and Linkable Format) files. The vulnerability stems from a null pointer dereference (CWE-476) in readelf's ELF file parsing logic. When readelf processes a crafted ELF file with malformed sections or headers, it fails to properly validate pointers before dereferencing them, causing either a segmentation fault or infinite loops that exhaust system resources. This occurs in the user-space utility, not the kernel, and requires local access to execute readelf against the malicious file.

RemediationAI

Apply the security update provided by Red Hat for your Enterprise Linux version via https://access.redhat.com/security/cve/CVE-2026-6845. Update the binutils package to the patched version specified in the Red Hat advisory (exact version number to be confirmed from the advisory). As a temporary workaround pending patching, restrict the use of readelf to trusted ELF binaries only and educate users not to process ELF files from untrusted sources. If readelf is used in automated tooling or build pipelines, validate input ELF files using other tools before passing them to readelf, or consider disabling readelf functionality if it is not essential to operations. Note that since this affects a development/analysis tool rather than a core system utility, impact on production systems is typically low unless readelf is actively used in critical workflows.

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Vendor StatusVendor

SUSE

Severity: Low
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise Module for Basesystem 15 SP7 Fixed
SUSE Linux Enterprise Module for Development Tools 15 SP7 Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP7 Fixed

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CVE-2026-6845 vulnerability details – vuln.today

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