CVE-2026-90830 - Vulnerability Details

- GNU Binutils Section Merge merge.c _bfd_write_merged_section null pointer dereference

Description

A security vulnerability has been detected in GNU Binutils 2.47. Impacted is the function _bfd_write_merged_section of the file bfd/merge.c of the component Section Merge. The manipulation leads to null pointer dereference. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through a bug report but has not responded yet.

Published: 2026-09-14

Score: 4.8 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

The flaw resides in the _bfd_write_merged_section routine of GNU Binutils’ section merge component. null pointer dereference, which crashes the calling process and disrupts any operation that engages the merge function, such as assembling or linking. The result is a denial of service that can affect the stability of build or deployment pipelines.

Affected Systems

GNU Binutils version 2.47 of the binutils package, regardless of platform, is vulnerable.

Risk and Exploitability

The CVSS score of 4.8 indicates moderate severity. The EPSS score is <1%, indicating a very low exploitation probability. The vulnerability is not listed in CISA KEV. Local attackers who can run or supply input to the affected functions can exploit this flaw.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

GNU

Binutils

affected

Version	Status	Constraints
`2.47`	affected	—

Configuration 1 [-]

cpe:2.3:a:gnu:binutils:2.47:*:*:*:*:*:*:*

No data.

Vendor Product Confidence Versions

Gnu

Binutils

95%

Version	Status	Scheme	Platform
`[2.47,2.47]`	affected	generic	—

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Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade to a Binutils release that contains the fix.
If no patch is available, restrict execution of binutils utilities that perform section merging to trusted users only by applying appropriate filesystem permissions or access controls.
Monitor the GNU Binutils project for an official patch and apply it promptly when released.

Generated by OpenCVE AI on September 17, 2026 at 19:44 UTC.

Tracking

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Advisories

No advisories yet.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00165.

Exploitation poc

Automatable no

Technical Impact partial

References

Link	Providers
https://nvd.nist.gov/vuln/detail/CVE-2026-90830
https://sourceware.org/bugzilla/attachment.cgi?id=16884
https://sourceware.org/bugzilla/show_bug.cgi?id=34452
https://vuldb.com/cve/CVE-2026-90830
https://vuldb.com/submit/925229
https://vuldb.com/vuln/403332
https://vuldb.com/vuln/403332/cti
https://www.cve.org/CVERecord?id=CVE-2026-90830
https://www.gnu.org/

History

Wed, 16 Sep 2026 15:45:00 +0000

Type	Values Removed	Values Added
CPEs		cpe:2.3:a:gnu:binutils:2.47:::::::*

Tue, 15 Sep 2026 20:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 15 Sep 2026 12:15:00 +0000

Type	Values Removed	Values Added
References		https://nvd.nist.gov/vuln/detail/CVE-2026-90830 https://www.cve.org/CVERecord?id=CVE-2026-90830
Metrics	threat_severity `None`	threat_severity `Moderate`

Mon, 14 Sep 2026 22:45:00 +0000

Type	Values Removed	Values Added
Description		A security vulnerability has been detected in GNU Binutils 2.47. Impacted is the function _bfd_write_merged_section of the file bfd/merge.c of the component Section Merge. The manipulation leads to null pointer dereference. The attack needs to be performed locally. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through a bug report but has not responded yet.
Title		GNU Binutils Section Merge merge.c _bfd_write_merged_section null pointer dereference
First Time appeared		Gnu Gnu binutils
Weaknesses		CWE-404 CWE-476
CPEs		cpe:2.3:a:gnu:binutils::::::::
Vendors & Products		Gnu Gnu binutils
References		https://sourceware.org/bugzilla/attachment.cgi?id=16884 https://sourceware.org/bugzilla/show_bug.cgi?id=34452 https://vuldb.com/cve/CVE-2026-90830 https://vuldb.com/submit/925229 https://vuldb.com/vuln/403332 https://vuldb.com/vuln/403332/cti https://www.gnu.org/
Metrics		cvssV2_0 `{'score': 4.3, 'vector': 'AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}` cvssV3_0 `{'score': 5.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}` cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}` cvssV4_0 `{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}`

Subscriptions

Gnu Binutils

MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-09-14T22:30:16.949Z

Updated: 2026-09-15T19:11:01.185Z

Reserved: 2026-09-13T19:21:30.799Z

Link: CVE-2026-90830

Vulnrichment

Updated: 2026-09-15T19:10:56.372Z

NVD

Status : Analyzed

Published: 2026-09-14T23:18:59.620

Modified: 2026-09-16T15:28:03.553

Link: CVE-2026-90830

Redhat

Severity : Moderate

Publid Date: 2026-09-14T22:30:16Z

Links: CVE-2026-90830 - Bugzilla

OpenCVE Enrichment

Updated: 2026-09-17T21:30:18Z

Weaknesses

CWE-404
Improper Resource Shutdown or Release
CWE-476
NULL Pointer Dereference

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

Exploitation poc

Automatable no

Technical Impact partial

Subscriptions

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