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A security vulnerability has been detected in GNU Binutils 2.47. (CVE-2026-91781)

0
Medium
VulnerabilityCVE-2026-91781gcveosvubuntu-cve-2026-91781cve-2026-91781ubuntu-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 local security vulnerability exists in GNU Binutils 2.47 in the ELF Section Handler component, specifically in the elf_x86_64_common_section_index function. The issue causes a null pointer dereference, potentially leading to a denial of service. Public exploit code is available. Upgrading to version 2.48 addresses this vulnerability.

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, 23:12:48 UTC

Technical Analysis

CVE-2026-91781 is a vulnerability in GNU Binutils version 2.47 affecting the elf_x86_64_common_section_index function within the ELF Section Handler (bfd/elf64-x86-64.c). The flaw allows local attackers to cause a null pointer dereference, resulting in a denial of service condition. The vulnerability has been publicly disclosed with exploit code available. The issue is fixed in GNU Binutils version 2.48, with patch identifier 7322e9bc30cb282575a701c307851fd3d66fee68.

Potential Impact

The vulnerability allows a local attacker to cause a null pointer dereference, leading to denial of service (application crash or system instability). There is no impact on confidentiality or integrity. The CVSS score is 3.3 (medium severity).

Mitigation Recommendations

Upgrade GNU Binutils to version 2.48 or later to remediate this vulnerability. The patch with identifier 7322e9bc30cb282575a701c307851fd3d66fee68 fixes the issue. No other mitigations are indicated.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-91781
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: 6ad3f52f2cdf04f6566585d3

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

Last enriched: 10/17/2026, 23:12:48 UTC

Last updated: 10/17/2026, 23:12:48 UTC

Views: 2

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