---
id: CVE-2026-90801
title: A security flaw has been discovered in GNU Binutils 2.47
summary: >-
  A security flaw has been discovered in GNU Binutils 2.47. This impacts the
  function cache_bwrite of the file bfd/cache.c of the component ld. The
  manipulation of the argument nbytes results in buffer overflow. The attack
  requires a local…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cwe:
  - CWE-119
  - CWE-120
vendor: gnu
product: binutils
affected:
  - binutils = 2.47
published: '2026-09-14'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T14:42:27.257'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90801'
references:
  - url: >-
      https://github.com/r1ck9-2q/cve_summit/blob/main/Heap-buffer-overflow%20in%20%60cache_bwrite%60%20(bfdcache.c436)%20via%20malformed%20ELF%20with%20%60--gc-sections%20-w%60.md
    label: cna@vuldb.com
  - url: 'https://sourceware.org/bugzilla/show_bug.cgi?id=34442'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-90801'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/920276'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403303'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403303/cti'
    label: cna@vuldb.com
  - url: 'https://www.gnu.org/'
    label: cna@vuldb.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90801.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-90801'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2533176'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-90801'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90801'
  - url: 'https://access.redhat.com/errata/RHSA-2026:47171'
tags:
  - nvd
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
epss: 0.00156
epssPercentile: 0.05129
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T16:31:19.525313Z'
ingestedAt: '2026-09-14T18:12:17.163Z'
patched:
  - hardened_images
---

## Overview

A security flaw has been discovered in GNU Binutils 2.47. This impacts the function cache_bwrite of the file bfd/cache.c of the component ld. The manipulation of the argument nbytes results in buffer overflow. The attack requires a local approach. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through a bug report but has not responded yet.

## Affected

- `binutils = 2.47`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Hardened Images, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, … · no fix planned: Red Hat Hardened Images · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90801.json)
- **RHSA-2026:47171** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-07-28 · [advisory](https://access.redhat.com/errata/RHSA-2026:47171)