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Fencer Vulns
medium 5.0

CVE-2025-0840 json

GNU Binutils objdump.c disassemble_bytes stack-based overflow

published 2025-01-29 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-1889

cvss
5.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

A vulnerability, which was classified as problematic, was found in GNU Binutils up to 2.43. This affects the function disassemble_bytes of the file binutils/objdump.c. The manipulation of the argument buf leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 2.44 is able to address this issue. The identifier of the patch is baac6c221e9d69335bf41366a1c7d87d8ab2f893. It is recommended to upgrade the affected component.

Patch / fix

  • gnu binutils 2.44
  • binutils Debian 14, Debian 13 2.43.90.20250122-1

debian advisories DEBIAN-CVE-2025-0840

  • binutils Ubuntu 20.04 LTS 2.34-6ubuntu1.10
  • binutils Ubuntu 22.04 LTS 2.38-4ubuntu2.7
  • binutils Ubuntu 24.04 LTS 2.42-4ubuntu2.4
  • binutils Ubuntu Pro 14.04 LTS 2.24-5ubuntu14.2+esm7
  • binutils Ubuntu Pro 16.04 LTS 2.26.1-1ubuntu1~16.04.8+esm11
  • binutils Ubuntu Pro 18.04 LTS 2.30-21ubuntu1~18.04.9+esm4

ubuntu advisories UBUNTU-CVE-2025-0840

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • binutils SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2.45-160000.1.1
  • bpftool SLES for SAP applications 16.0, SLES 16.0 7.5.0-160000.2.3
  • binutils SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES for SAP 15 SP3 +18 more 2.45-150100.7.57.1
  • perf SLE Module for Development Tools 15 SP6, openSUSE Leap 15.6 6.4.0.git33229.a3afe13a7f-150600.3.17.1
  • perf SLE Module for Development Tools 15 SP7 6.4.0.git54263.0aad576b1c-150700.3.2.2
  • perf SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE High Performance Computing 15 SP3-LTSS +1 more 5.3.18-150300.38.7.1
  • perf SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE High Performance Computing 15 SP4-LTSS +1 more 5.14.21-150400.44.20.1
  • perf SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 5.14.21-150500.52.5.1

suse advisories SUSE-SU-2025:21195-1SUSE-SU-2025:21197-1SUSE-SU-2025:4096-1

  • binutils openSUSE Leap 16.0 2.45-160000.1.1
  • bpftool openSUSE Leap 16.0 7.5.0-160000.2.3
  • cross-rx-binutils openSUSE Leap 16.0 2.45-160000.1.1
  • cross-arm-binutils openSUSE Leap 16.0 2.45-160000.1.1
  • cross-avr-binutils openSUSE Leap 16.0 2.45-160000.1.1
  • cross-bpf-binutils openSUSE Leap 16.0 2.45-160000.1.1
  • cross-ppc-binutils openSUSE Leap 16.0 2.45-160000.1.1
  • cross-pru-binutils openSUSE Leap 16.0 2.45-160000.1.1

opensuse advisories openSUSE-SU-2025:20150-1openSUSE-SU-2025:15725-1

  • binutils Alpine 3.18 2.40-r8
  • binutils Alpine 3.19 2.41-r1
  • binutils Alpine 3.20 2.42-r1
  • binutils Alpine 3.21 2.43.1-r2
  • binutils Alpine 3.24, Alpine 3.23, Alpine 3.22 2.44-r0

alpine advisories ALPINE-CVE-2025-0840

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • binutils Azure Linux 3.0 2.41-4
  • binutils CBL-Mariner 2.0 2.37-11

azure linux advisories AZL-56099AZL-56103

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-0840 updated cvss 5.0

binutils: GNU Binutils objdump.c disassemble_bytes stack-based overflow

  • Red Hat Enterprise Linux 9 mingw-binutils, mingw32-binutils, mingw64-binutils, mingw-binutils-generic
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 6 binutils Red Hat Enterprise Linux 7 gdb, binutils, gdb-gdbserver Red Hat Enterprise Linux 8 gdb, binutils, gdb-headless, gdb-gdbserver, mingw-binutils, mingw32-binutils, +9 more Red Hat Enterprise Linux 9 gdb, binutils, gdb-minimal, gdb-headless, binutils-gold, gdb-gdbserver, +6 more Red Hat Enterprise Linux 10 binutils, mingw-binutils, mingw32-binutils, mingw64-binutils
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

0.76% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • sourceware.org https://sourceware.org/bugzilla/attachment.cgi?id=15882 referenced PoC, tagged "exploit" by a source, unverified
  • vuldb.com https://vuldb.com/?submit.485255 referenced PoC, tagged "exploit" by a source, unverified
  • sourceware.org https://sourceware.org/bugzilla/show_bug.cgi?id=32560 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
CNA 3.1 5.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
CNA 3.0 5.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
CNA 2.0 5.1 AV:N/AC:H/Au:N/C:P/I:P/A:P
CNA 4.0 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • GNU Binutils

Classification

Weakness
  • CWE-121 Stack-based Buffer Overflow
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-787 Out-of-bounds Write

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.