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binutils readelf CVE-2026-6844

| EUVDEUVD-2026-24710 MEDIUM
Uncontrolled Resource Consumption (CWE-400)
2026-04-22 redhat GHSA-p33j-xffm-gxj7
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
SUSE
MEDIUM
qualitative
Red Hat
5.5 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
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 - 09:00 euvd
EUVD-2026-24710
Analysis Generated
Apr 22, 2026 - 09:00 vuln.today
CVE Published
Apr 22, 2026 - 08:37 nvd
MEDIUM 5.5

DescriptionCVE.org

A flaw was found in the readelf utility of the binutils package. A local attacker could exploit two Denial of Service (DoS) vulnerabilities by providing a specially crafted Executable and Linkable Format (ELF) file. One vulnerability, a resource exhaustion (CWE-400), can lead to an out-of-memory condition. The other, a null pointer dereference (CWE-476), can cause a segmentation fault. Both issues can result in the readelf utility becoming unresponsive or crashing, leading to a denial of service.

AnalysisAI

The readelf utility in binutils is vulnerable to denial of service through two distinct flaws triggered by maliciously crafted ELF files: a resource exhaustion vulnerability (CWE-400) causing out-of-memory conditions and a null pointer dereference (CWE-476) causing segmentation faults. Both vulnerabilities require local access and user interaction to open a malicious file, resulting in the readelf utility crashing or becoming unresponsive. No public exploit code or active exploitation has been identified at the time of analysis.

Technical ContextAI

The binutils package provides essential binary utility tools, including readelf, which parses and displays information about Executable and Linkable Format (ELF) files used across Unix-like systems. The vulnerability exists in readelf's parser logic when processing specially crafted ELF headers or sections. CWE-400 (Uncontrolled Resource Consumption) indicates the parser lacks proper bounds checking or resource limits when allocating memory for ELF structures, allowing an attacker to exhaust available system memory. CWE-476 (Null Pointer Dereference) indicates inadequate validation of parsed ELF data structures before dereferencing pointers, causing immediate crashes. These are common input validation flaws in binary parsers that operate on untrusted file formats. The CPE data indicates binutils is distributed as part of Red Hat Enterprise Linux 7, 8, and 10 systems.

RemediationAI

Apply the security patch released by Red Hat for your respective RHEL version via standard package management tools (yum/dnf update binutils). Specific patch versions should be confirmed from the Red Hat Security Advisory URL provided in references. Until patching is possible, implement compensating controls: restrict readelf usage to trusted sources by enforcing file integrity checks before processing (e.g., GPG signature verification for binaries intended for analysis), disable interactive readelf usage from untrusted sources in build systems or automation pipelines, and configure resource limits (ulimit -m, cgroups memory limits) on systems where readelf processes untrusted ELF files to prevent system-wide out-of-memory conditions. Note that these controls do not eliminate the vulnerability but reduce exposure. Code review of any custom tooling that invokes readelf programmatically is recommended to ensure untrusted input is not passed directly to the utility.

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Vendor StatusVendor

SUSE

Severity: Medium
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-2026-6844 vulnerability details – vuln.today

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