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CVE-2026-91782

GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x86_allocate_dynrelocs null pointer dereference

4.8 MediumFix available

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
Low

Exploit likelihood

0.18%Up 0.1 points since Sep 15, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.8

GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x86_allocate_dynrelocs null pointer dereference

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

Record
CVE-2026-91782
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CVSS 3.0
3.3 LowCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CVSS 2.0
1.7 AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C
Weakness
CWE-476, CWE-404
Updated
2026-11-02
EUVDEUVD-2026-78335 4.8

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

Record
EUVD-2026-78335
CVSS 4.0
4.8 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Updated
2026-11-02
GitHub AdvisoriesGHSA-vqfr-4h6g-3q8x 1.9

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function...

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

Record
GHSA-vqfr-4h6g-3q8x
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness
CWE-404
Updated
2026-11-02
NVD 1.9

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

Record
CVE-2026-91782
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0
1.7 LowAV:L/AC:L/Au:S/C:N/I:N/A:P
Weakness
CWE-404, CWE-476
Updated
2026-11-02
OSVBELL-CVE-2026-91782 3.3
Record
BELL-CVE-2026-91782
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02
OSV 1.9

GNU Binutils Dynamic Relocation Allocation elfxx-x86.c elf_x86_allocate_dynrelocs null pointer dereference

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

Record
CVE-2026-91782
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Weakness
CWE-404, CWE-476
Updated
2026-11-02
OSVDEBIAN-CVE-2026-91782 1.9

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

Record
DEBIAN-CVE-2026-91782
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Updated
2026-11-02
OSVRHSA-2026:67961 5.5

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Record
RHSA-2026:67961
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-91782 1.9

A vulnerability was detected in GNU Binutils 2.47. Affected by this vulnerability is the function elf_x86_allocate_dynrelocs of the file bfd/elfxx-x86.c of the component Dynamic Relocation Allocation. The manipulation results in null pointer dereference. The attack requires a local approach. The exploit is now public and may be used. Upgrading to version 2.48 addresses this issue. The patch is identified as d1268210b6f6/471130b39c0/283d3198bed/0a84e560216/a692a633d40. Upgrading the affected component is recommended.

Record
UBUNTU-CVE-2026-91782
CVSS 4.0
1.9 LowCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
CVSS 3.1
3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
binutils
Alpaquita:25
 2.44-r0 up to 2.45.1-r2
2.45.1-r2
binutils
Alpaquita:stream
 2.40-r4 up to 2.45.1-r4
2.45.1-r4
binutils
BellSoft Hardened Containers:25
 2.44-r0 up to 2.45.1-r2
2.45.1-r2
binutils
BellSoft Hardened Containers:stream
 2.40-r4 up to 2.45.1-r4
2.45.1-r4
binutils
Debian:12
 All versions, plus listed versions
2.40-22.40.50.20230111-12.40.50.20230215-12.40.50.20230501-12.40.50.20230510-1
Show 45 moreShow less
2.40.50.20230602-12.40.50.20230611-12.40.50.20230611-22.40.50.20230622-12.40.50.20230625-12.40.50.20230630-12.40.90.20230705-12.40.90.20230714-12.40.90.20230714-22.40.90.20230720-12.40.90.20230729-12.40.90.20230729-22.41-12.41-22.41-32.41-42.41-52.41-62.41-72.41.50.20230731-12.41.50.20230803-12.41.50.20230905-12.41.50.20231010-12.41.50.20231101-12.41.50.20231125-12.41.50.20231202-12.41.50.20231206-12.41.50.20231214-12.41.50.20231227-12.41.90.20240115-12.41.90.20240122-12.42-12.42-22.42-2+hurd.12.42-32.42-42.42.50.20240614-12.42.50.20240618-12.42.50.20240625-12.42.50.20240710-12.42.90.20240720-12.42.90.20240720-22.43-12.43-22.43.1-1
 None known
binutils
Debian:13
 All versions, plus listed versions
2.44-32.44.50.20250201-12.44.50.20250207-12.44.50.20250218-12.44.50.20250218-2
Show 45 moreShow less
2.44.50.20250309-12.44.50.20250405-12.44.50.20250502-12.44.50.20250520-12.44.50.20250528-12.44.50.20250707-12.44.90.20250719-12.45-12.45-22.45-32.45-42.45-52.45-62.45-72.45-82.45.50.20250813-12.45.50.20250903-12.45.50.20251005-12.45.50.20251023-12.45.50.20251023-22.45.50.20251122-12.45.50.20251125-12.45.50.20251201-12.45.50.20251209-12.45.50.20260116-12.45.50.20260119-12.45.90.20260125-12.45.90.20260201-12.46-12.46-22.46-32.46.50.20260216-12.46.50.20260509-12.46.50.20260519-12.46.50.20260608-12.46.50.20260617-12.46.90.20260712-12.47-12.47-22.47-32.47-42.47-52.47-62.47.50.20260813-12.47.50.20260813-2
 None known
binutils
Debian:14
 All versions, plus listed versions
2.44-32.44.50.20250201-12.44.50.20250207-12.44.50.20250218-12.44.50.20250218-2
Show 45 moreShow less
2.44.50.20250309-12.44.50.20250405-12.44.50.20250502-12.44.50.20250520-12.44.50.20250528-12.44.50.20250707-12.44.90.20250719-12.45-12.45-22.45-32.45-42.45-52.45-62.45-72.45-82.45.50.20250813-12.45.50.20250903-12.45.50.20251005-12.45.50.20251023-12.45.50.20251023-22.45.50.20251122-12.45.50.20251125-12.45.50.20251201-12.45.50.20251209-12.45.50.20260116-12.45.50.20260119-12.45.90.20260125-12.45.90.20260201-12.46-12.46-22.46-32.46.50.20260216-12.46.50.20260509-12.46.50.20260519-12.46.50.20260608-12.46.50.20260617-12.46.90.20260712-12.47-12.47-22.47-32.47-42.47-52.47-62.47.50.20260813-12.47.50.20260813-2
 None known
binutils
Red Hat:hummingbird:1
From an advisory covering 4 CVEs
 before 0:2.46.1-1.2.hum1
0:2.46.1-1.2.hum1
binutils-devel
Red Hat:hummingbird:1
From an advisory covering 4 CVEs
 before 0:2.46.1-1.2.hum1
0:2.46.1-1.2.hum1
binutils-gold
Red Hat:hummingbird:1
From an advisory covering 4 CVEs
 before 0:2.46.1-1.2.hum1
0:2.46.1-1.2.hum1
Show 9 moreShow less
Affected packages
PackageAffectedFixed
binutils-gprofng
Red Hat:hummingbird:1
From an advisory covering 4 CVEs
 before 0:2.46.1-1.2.hum1
0:2.46.1-1.2.hum1
binutils
Ubuntu:Pro:14.04:LTS
 All versions, plus listed versions
2.23.52.20130913-0ubuntu12.23.90.20131017-1ubuntu12.23.90.20131116-1ubuntu12.23.91.20131123-1ubuntu12.24-1ubuntu1
Show 20 moreShow less
2.24-1ubuntu22.24-2ubuntu12.24-2ubuntu22.24-2ubuntu32.24-4ubuntu12.24-5ubuntu12.24-5ubuntu22.24-5ubuntu32.24-5ubuntu3.12.24-5ubuntu132.24-5ubuntu142.24-5ubuntu14.12.24-5ubuntu14.22.24-5ubuntu14.2+esm12.24-5ubuntu14.2+esm22.24-5ubuntu14.2+esm32.24-5ubuntu14.2+esm52.24-5ubuntu14.2+esm62.24-5ubuntu14.2+esm72.24-5ubuntu14.2+esm8
 None known
binutils
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
2.25.1-6ubuntu12.25.51.20151022-0ubuntu22.25.51.20151022-0ubuntu32.25.51.20151027-0ubuntu12.25.51.20151028-0ubuntu1
Show 37 moreShow less
2.25.51.20151106-0ubuntu12.25.51.20151113-1ubuntu12.25.51.20151113-2ubuntu12.25.90.20151125-1ubuntu12.25.90.20151125-2ubuntu12.25.90.20151211-0ubuntu12.25.90.20151211-0ubuntu22.25.90.20160101-1ubuntu12.25.90.20160101-1ubuntu22.26-2ubuntu12.26-3ubuntu12.26-4ubuntu12.26-5ubuntu12.26-6ubuntu12.26-7ubuntu22.26-8ubuntu12.26-8ubuntu22.26-8ubuntu2.12.26.1-1ubuntu1~16.042.26.1-1ubuntu1~16.04.12.26.1-1ubuntu1~16.04.32.26.1-1ubuntu1~16.04.42.26.1-1ubuntu1~16.04.52.26.1-1ubuntu1~16.04.62.26.1-1ubuntu1~16.04.72.26.1-1ubuntu1~16.04.82.26.1-1ubuntu1~16.04.8+esm12.26.1-1ubuntu1~16.04.8+esm32.26.1-1ubuntu1~16.04.8+esm42.26.1-1ubuntu1~16.04.8+esm52.26.1-1ubuntu1~16.04.8+esm62.26.1-1ubuntu1~16.04.8+esm72.26.1-1ubuntu1~16.04.8+esm92.26.1-1ubuntu1~16.04.8+esm112.26.1-1ubuntu1~16.04.8+esm122.26.1-1ubuntu1~16.04.8+esm132.26.1-1ubuntu1~16.04.8+esm14
 None known
binutils
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
2.29.1-4ubuntu12.29.1-6ubuntu12.29.1-7ubuntu12.29.1-8ubuntu12.29.1-10ubuntu1
Show 25 moreShow less
2.29.1-12ubuntu12.30-4ubuntu12.30-5ubuntu12.30-7ubuntu12.30-8ubuntu12.30-9ubuntu12.30-10ubuntu12.30-11ubuntu12.30-14ubuntu22.30-15ubuntu12.30-20ubuntu2~18.042.30-21ubuntu1~18.042.30-21ubuntu1~18.04.12.30-21ubuntu1~18.04.22.30-21ubuntu1~18.04.32.30-21ubuntu1~18.04.42.30-21ubuntu1~18.04.52.30-21ubuntu1~18.04.72.30-21ubuntu1~18.04.82.30-21ubuntu1~18.04.92.30-21ubuntu1~18.04.9+esm12.30-21ubuntu1~18.04.9+esm32.30-21ubuntu1~18.04.9+esm42.30-21ubuntu1~18.04.9+esm52.30-21ubuntu1~18.04.9+esm13
 None known
binutils
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
2.33-2ubuntu12.33.1-1ubuntu12.33.1-5ubuntu12.33.1-6ubuntu12.33.1-6ubuntu3
Show 18 moreShow less
2.33.90.20200122-1ubuntu22.34-1ubuntu12.34-3ubuntu12.34-4ubuntu12.34-5ubuntu12.34-6ubuntu12.34-6ubuntu1.12.34-6ubuntu1.32.34-6ubuntu1.42.34-6ubuntu1.52.34-6ubuntu1.62.34-6ubuntu1.72.34-6ubuntu1.82.34-6ubuntu1.92.34-6ubuntu1.102.34-6ubuntu1.112.34-6ubuntu1.11+esm12.34-6ubuntu1.11+esm2
 None known
binutils
Ubuntu:22.04:LTS
 All versions, plus listed versions
2.37-7ubuntu12.37-9ubuntu12.37-10ubuntu12.37.50.20220106-2ubuntu12.37.90.20220126-0ubuntu1
Show 16 moreShow less
2.37.90.20220130-0ubuntu22.38-1ubuntu12.38-2ubuntu12.38-3ubuntu12.38-4ubuntu22.38-4ubuntu2.12.38-4ubuntu2.22.38-4ubuntu2.32.38-4ubuntu2.42.38-4ubuntu2.52.38-4ubuntu2.62.38-4ubuntu2.72.38-4ubuntu2.82.38-4ubuntu2.102.38-4ubuntu2.112.38-4ubuntu2.12
 None known
binutils
Ubuntu:24.04:LTS
 All versions, plus listed versions
2.41-5ubuntu12.41-6ubuntu12.41.50.20231206-1ubuntu12.41.50.20231214-1ubuntu12.41.50.20231227-1ubuntu1
Show 12 moreShow less
2.41.90.20240122-1ubuntu12.42-2ubuntu12.42-3ubuntu12.42-4ubuntu12.42-4ubuntu22.42-4ubuntu2.32.42-4ubuntu2.42.42-4ubuntu2.52.42-4ubuntu2.62.42-4ubuntu2.72.42-4ubuntu2.82.42-4ubuntu2.10
 None known
binutils
Ubuntu:26.10
 All versions, plus listed versions
2.46-3ubuntu22.46.50.20260608-1ubuntu12.47-2ubuntu12.47-6ubuntu1
 None known
binutils
Ubuntu:26.04:LTS
 All versions, plus listed versions
2.45-7ubuntu12.45-7ubuntu22.45-8ubuntu12.45.50.20251125-1ubuntu12.45.50.20251201-1ubuntu1
Show 6 moreShow less
2.45.50.20251209-1ubuntu12.45.50.20260119-1ubuntu12.46-1ubuntu12.46-2ubuntu12.46-3ubuntu12.46-3ubuntu2
 None known

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-91782 is a medium vulnerability (CVSS 4.8) in Gnu Binutils, published September 15, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.18%, the 7th percentile. Fixed in binutils 2.45.1-r2.

References

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Left out here: 80 versions. The JSON record has them.

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