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A vulnerability was detected in GNU Binutils 2.47. (CVE-2026-91782)

0
Medium
VulnerabilityCVE-2026-91782gcveosvubuntu-cve-2026-91782cve-2026-91782ubuntu-pro-14-04-ltsubuntu-pro-16-04-ltsubuntu-pro-18-04-ltsubuntu-pro-20-04-ltsubuntu-22-04-ltsubuntu-24-04-ltsubuntu-26-10ubuntu-26-04-lts
Published: 09/15/2026 (09/15/2026, 09:16:00 UTC)
Source: GCVE Database
Product: binutils

Description

A vulnerability in GNU Binutils 2.47 affects the elf_x86_allocate_dynrelocs function in the Dynamic Relocation Allocation component, causing a null pointer dereference. The vulnerability requires local access to exploit. Public exploit code is available. Upgrading to version 2.48 resolves the issue.

CVSS v3.1

Score 3.3low

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

Affected software

Ubuntu:Pro:14.04:LTSmore threats →ghsa
binutils
pkg:deb/ubuntu/binutils?arch=source&distro=esm-infra-legacy/trusty
Affected versions
=2.23.52.20130913-0ubuntu1=2.23.90.20131017-1ubuntu1=2.23.90.20131116-1ubuntu1=2.23.91.20131123-1ubuntu1=2.24-1ubuntu1=2.24-1ubuntu2=2.24-2ubuntu1=2.24-2ubuntu2=2.24-2ubuntu3=2.24-4ubuntu1=2.24-5ubuntu1=2.24-5ubuntu2=2.24-5ubuntu3=2.24-5ubuntu3.1=2.24-5ubuntu13=2.24-5ubuntu14=2.24-5ubuntu14.1=2.24-5ubuntu14.2=2.24-5ubuntu14.2+esm1=2.24-5ubuntu14.2+esm2=2.24-5ubuntu14.2+esm3=2.24-5ubuntu14.2+esm5=2.24-5ubuntu14.2+esm6=2.24-5ubuntu14.2+esm7=2.24-5ubuntu14.2+esm8
Ubuntu:Pro:16.04:LTSmore threats →ghsa
binutils
pkg:deb/ubuntu/binutils?arch=source&distro=esm-infra/xenial
Affected versions
=2.25.1-6ubuntu1=2.25.51.20151022-0ubuntu2=2.25.51.20151022-0ubuntu3=2.25.51.20151027-0ubuntu1=2.25.51.20151028-0ubuntu1=2.25.51.20151106-0ubuntu1=2.25.51.20151113-1ubuntu1=2.25.51.20151113-2ubuntu1=2.25.90.20151125-1ubuntu1=2.25.90.20151125-2ubuntu1=2.25.90.20151211-0ubuntu1=2.25.90.20151211-0ubuntu2=2.25.90.20160101-1ubuntu1=2.25.90.20160101-1ubuntu2=2.26-2ubuntu1=2.26-3ubuntu1=2.26-4ubuntu1=2.26-5ubuntu1=2.26-6ubuntu1=2.26-7ubuntu2=2.26-8ubuntu1=2.26-8ubuntu2=2.26-8ubuntu2.1=2.26.1-1ubuntu1~16.04=2.26.1-1ubuntu1~16.04.1=2.26.1-1ubuntu1~16.04.3=2.26.1-1ubuntu1~16.04.4=2.26.1-1ubuntu1~16.04.5=2.26.1-1ubuntu1~16.04.6=2.26.1-1ubuntu1~16.04.7=2.26.1-1ubuntu1~16.04.8=2.26.1-1ubuntu1~16.04.8+esm1=2.26.1-1ubuntu1~16.04.8+esm3=2.26.1-1ubuntu1~16.04.8+esm4=2.26.1-1ubuntu1~16.04.8+esm5=2.26.1-1ubuntu1~16.04.8+esm6=2.26.1-1ubuntu1~16.04.8+esm7=2.26.1-1ubuntu1~16.04.8+esm9=2.26.1-1ubuntu1~16.04.8+esm11=2.26.1-1ubuntu1~16.04.8+esm12=2.26.1-1ubuntu1~16.04.8+esm13=2.26.1-1ubuntu1~16.04.8+esm14
Ubuntu:Pro:18.04:LTSmore threats →ghsa
binutils
pkg:deb/ubuntu/binutils?arch=source&distro=esm-infra/bionic
Affected versions
=2.29.1-4ubuntu1=2.29.1-6ubuntu1=2.29.1-7ubuntu1=2.29.1-8ubuntu1=2.29.1-10ubuntu1=2.29.1-12ubuntu1=2.30-4ubuntu1=2.30-5ubuntu1=2.30-7ubuntu1=2.30-8ubuntu1=2.30-9ubuntu1=2.30-10ubuntu1=2.30-11ubuntu1=2.30-14ubuntu2=2.30-15ubuntu1=2.30-20ubuntu2~18.04=2.30-21ubuntu1~18.04=2.30-21ubuntu1~18.04.1=2.30-21ubuntu1~18.04.2=2.30-21ubuntu1~18.04.3=2.30-21ubuntu1~18.04.4=2.30-21ubuntu1~18.04.5=2.30-21ubuntu1~18.04.7=2.30-21ubuntu1~18.04.8=2.30-21ubuntu1~18.04.9=2.30-21ubuntu1~18.04.9+esm1=2.30-21ubuntu1~18.04.9+esm3=2.30-21ubuntu1~18.04.9+esm4=2.30-21ubuntu1~18.04.9+esm5=2.30-21ubuntu1~18.04.9+esm13
Ubuntu:Pro:20.04:LTSmore threats →ghsa
binutils
pkg:deb/ubuntu/binutils?arch=source&distro=esm-infra/focal
Affected versions
=2.33-2ubuntu1=2.33.1-1ubuntu1=2.33.1-5ubuntu1=2.33.1-6ubuntu1=2.33.1-6ubuntu3=2.33.90.20200122-1ubuntu2=2.34-1ubuntu1=2.34-3ubuntu1=2.34-4ubuntu1=2.34-5ubuntu1=2.34-6ubuntu1=2.34-6ubuntu1.1=2.34-6ubuntu1.3=2.34-6ubuntu1.4=2.34-6ubuntu1.5=2.34-6ubuntu1.6=2.34-6ubuntu1.7=2.34-6ubuntu1.8=2.34-6ubuntu1.9=2.34-6ubuntu1.10=2.34-6ubuntu1.11=2.34-6ubuntu1.11+esm1=2.34-6ubuntu1.11+esm2
Ubuntu:22.04:LTSmore threats →ghsa
binutils
pkg:deb/ubuntu/binutils?arch=source&distro=jammy
Affected versions
=2.37-7ubuntu1=2.37-9ubuntu1=2.37-10ubuntu1=2.37.50.20220106-2ubuntu1=2.37.90.20220126-0ubuntu1=2.37.90.20220130-0ubuntu2=2.38-1ubuntu1=2.38-2ubuntu1=2.38-3ubuntu1=2.38-4ubuntu2=2.38-4ubuntu2.1=2.38-4ubuntu2.2=2.38-4ubuntu2.3=2.38-4ubuntu2.4=2.38-4ubuntu2.5=2.38-4ubuntu2.6=2.38-4ubuntu2.7=2.38-4ubuntu2.8=2.38-4ubuntu2.10=2.38-4ubuntu2.11=2.38-4ubuntu2.12
Ubuntu:24.04:LTSmore threats →ghsa
binutils
pkg:deb/ubuntu/binutils?arch=source&distro=noble
Affected versions
=2.41-5ubuntu1=2.41-6ubuntu1=2.41.50.20231206-1ubuntu1=2.41.50.20231214-1ubuntu1=2.41.50.20231227-1ubuntu1=2.41.90.20240122-1ubuntu1=2.42-2ubuntu1=2.42-3ubuntu1=2.42-4ubuntu1=2.42-4ubuntu2=2.42-4ubuntu2.3=2.42-4ubuntu2.4=2.42-4ubuntu2.5=2.42-4ubuntu2.6=2.42-4ubuntu2.7=2.42-4ubuntu2.8=2.42-4ubuntu2.10
Ubuntu:26.10more threats →ghsa
binutils
pkg:deb/ubuntu/binutils?arch=source&distro=stonking
Affected versions
=2.46-3ubuntu2=2.46.50.20260608-1ubuntu1=2.47-2ubuntu1=2.47-6ubuntu1
Ubuntu:26.04:LTSmore threats →ghsa
binutils
pkg:deb/ubuntu/binutils?arch=source&distro=resolute
Affected versions
=2.45-7ubuntu1=2.45-7ubuntu2=2.45-8ubuntu1=2.45.50.20251125-1ubuntu1=2.45.50.20251201-1ubuntu1=2.45.50.20251209-1ubuntu1=2.45.50.20260119-1ubuntu1=2.46-1ubuntu1=2.46-2ubuntu1=2.46-3ubuntu1=2.46-3ubuntu2

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 10/17/2026, 23:12:29 UTC

Technical Analysis

CVE-2026-91782 is a vulnerability in GNU Binutils version 2.47 where the function elf_x86_allocate_dynrelocs in the file bfd/elfxx-x86.c mishandles dynamic relocation allocation, resulting in a null pointer dereference. This flaw requires local access to exploit and can cause a denial of service. Exploit code is publicly available. The issue is fixed in version 2.48, and upgrading to this version is recommended.

Potential Impact

The vulnerability causes a null pointer dereference leading to a denial of service condition. There is no impact on confidentiality or integrity. Exploitation requires local access, limiting the attack surface. Public exploit code availability increases the risk of exploitation.

Mitigation Recommendations

Upgrading GNU Binutils to version 2.48 or later addresses this vulnerability. Applying this official fix is recommended to mitigate the risk. No additional mitigation steps are specified.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-91782
Osv Schema Version
1.7.0
Ecosystems
["Ubuntu:Pro:14.04:LTS","Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:26.10","Ubuntu:26.04:LTS"]
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6ad3f52f2cdf04f6566585d2

Added to database: 10/17/2026, 22:22:39 UTC

Last enriched: 10/17/2026, 23:12:29 UTC

Last updated: 10/17/2026, 23:12:29 UTC

Views: 2

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