# CVE-2025-11083: GNU Binutils Linker elfcode.h elf_swap_shdr heap-based overflow

> A heap-based buffer overflow in the GNU Binutils linker allows local attackers to execute arbitrary code or cause a denial of service.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 27 Sep 2025
- **Updated:** 15 Oct 2026
- **Also known as:** ALSA-2025:23336, ALSA-2025:23343, ALSA-2025:23382, ALSA-2026:0052, ALSA-2026:0108, ALSA-2026:1359, ALSA-2026:2627, AZL-67905, AZL-67911, AZL-67919, AZL-85527, AZL-85533, BELL-CVE-2025-11083, CLEANSTART-2026-IC12241, CLSA-2025-1766586503, CLSA-2025-1767002772, CLSA-2025-1767003370, CLSA-2025-1767090011, CLSA-2026-1767617469, CLSA-2026-1767626154, CLSA-2026-1767626618, CLSA-2026-1767697963, DEBIAN-CVE-2025-11083, ECHO-ce4e-90c2-9f62, GHSA-fmx9-hrmg-3x9v, MINI-c5pw-gc33-gw37, OESA-2025-2567, OESA-2025-2568, OESA-2025-2569, RHSA-2025:23232, RHSA-2025:23233, RHSA-2025:23336, RHSA-2025:23343, RHSA-2025:23359, RHSA-2025:23382, RHSA-2025:23400, RHSA-2026:0052, RHSA-2026:0108, RHSA-2026:0341, RHSA-2026:0342, RHSA-2026:0343, RHSA-2026:0479, RHSA-2026:0480, RHSA-2026:0481, RHSA-2026:0482, RHSA-2026:1359, RHSA-2026:2627, RLSA-2025:23336, RLSA-2025:23343, RLSA-2025:23382, RLSA-2026:0052, RLSA-2026:0108, RLSA-2026:1359, RLSA-2026:2627, ROOT-OS-DEBIAN-12-CVE-2025-11083, UBUNTU-CVE-2025-11083

## What is CVE-2025-11083?

CVE-2025-11083 is a medium-severity memory corruption vulnerability in Gnu Binutils, published on 27 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability has been found in GNU Binutils 2.45. The affected element is the function elf_swap_shdr in the library bfd/elfcode.h of the component Linker. The manipulation leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The identifier of the patch is 9ca499644a21ceb3f946d1c179c38a83be084490. To fix this issue, it is recommended to deploy a patch. The code maintainer replied with "[f]ixed for 2.46".

Weakness: CWE-122 (Heap-based Buffer Overflow), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2025-11083?

It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `gcc-toolset-15-binutils` | AlmaLinux:10 | All versions | 2.44-7.el10_1.1 |
| `gcc-toolset-15-binutils-devel` | AlmaLinux:10 | All versions | 2.44-7.el10_1.1 |
| `gcc-toolset-15-binutils-gold` | AlmaLinux:10 | All versions | 2.44-7.el10_1.1 |
| `gcc-toolset-15-binutils-gprofng` | AlmaLinux:10 | All versions | 2.44-7.el10_1.1 |
| `binutils` | AlmaLinux:8 | All versions | 2.30-128.el8_10 |
| `binutils-devel` | AlmaLinux:8 | All versions | 2.30-128.el8_10 |
| `gcc-toolset-14-binutils` | AlmaLinux:8 | All versions | 2.41-4.el8_10.1 |
| `gcc-toolset-14-binutils-devel` | AlmaLinux:8 | All versions | 2.41-4.el8_10.1 |
| `gcc-toolset-14-binutils-gold` | AlmaLinux:8 | All versions | 2.41-4.el8_10.1 |
| `gcc-toolset-14-binutils-gprofng` | AlmaLinux:8 | All versions | 2.41-4.el8_10.1 |
| `binutils` | AlmaLinux:9 | All versions | 2.35.2-67.el9_7.1 |
| `binutils-devel` | AlmaLinux:9 | All versions | 2.35.2-67.el9_7.1 |
| `binutils-gold` | AlmaLinux:9 | All versions | 2.35.2-67.el9_7.1 |
| `gcc-toolset-13-binutils` | AlmaLinux:9 | All versions | 2.40-21.el9_7.1 |
| `gcc-toolset-13-binutils-devel` | AlmaLinux:9 | All versions | 2.40-21.el9_7.1 |
| `gcc-toolset-13-binutils-gold` | AlmaLinux:9 | All versions | 2.40-21.el9_7.1 |
| `gcc-toolset-14-binutils` | AlmaLinux:9 | All versions | 2.41-5.el9_7.1 |
| `gcc-toolset-14-binutils-devel` | AlmaLinux:9 | All versions | 2.41-5.el9_7.1 |
| `gcc-toolset-14-binutils-gold` | AlmaLinux:9 | All versions | 2.41-5.el9_7.1 |
| `gcc-toolset-14-binutils-gprofng` | AlmaLinux:9 | All versions | 2.41-5.el9_7.1 |
| `gcc-toolset-15-binutils` | AlmaLinux:9 | All versions | 2.44-3.el9_7.1 |
| `gcc-toolset-15-binutils-devel` | AlmaLinux:9 | All versions | 2.44-3.el9_7.1 |
| `gcc-toolset-15-binutils-gold` | AlmaLinux:9 | All versions | 2.44-3.el9_7.1 |
| `gcc-toolset-15-binutils-gprofng` | AlmaLinux:9 | All versions | 2.44-3.el9_7.1 |
| `gcc-toolset-15-binutils` | Red Hat:enterprise_linux:10.1 | All versions | 0:2.44-7.el10_1.1 |
| `gcc-toolset-15-binutils-debuginfo` | Red Hat:enterprise_linux:10.1 | All versions | 0:2.44-7.el10_1.1 |
| `gcc-toolset-15-binutils-devel` | Red Hat:enterprise_linux:10.1 | All versions | 0:2.44-7.el10_1.1 |
| `gcc-toolset-15-binutils-gold` | Red Hat:enterprise_linux:10.1 | All versions | 0:2.44-7.el10_1.1 |
| `gcc-toolset-15-binutils-gold-debuginfo` | Red Hat:enterprise_linux:10.1 | All versions | 0:2.44-7.el10_1.1 |
| `gcc-toolset-15-binutils-gprofng` | Red Hat:enterprise_linux:10.1 | All versions | 0:2.44-7.el10_1.1 |
| `gcc-toolset-15-binutils-gprofng-debuginfo` | Red Hat:enterprise_linux:10.1 | All versions | 0:2.44-7.el10_1.1 |
| `binutils-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.30-128.el8_10 |
| `binutils-debugsource` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.30-128.el8_10 |
| `binutils-devel` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.30-128.el8_10 |
| `gcc-toolset-14-binutils` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.41-4.el8_10.1 |
| `gcc-toolset-14-binutils-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.41-4.el8_10.1 |
| `gcc-toolset-14-binutils-devel` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.41-4.el8_10.1 |
| `gcc-toolset-14-binutils-gold` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.41-4.el8_10.1 |
| `gcc-toolset-14-binutils-gold-debuginfo` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.41-4.el8_10.1 |
| `gcc-toolset-14-binutils-gprofng` | Red Hat:enterprise_linux:8::appstream | All versions | 0:2.41-4.el8_10.1 |

Products: Gnu Binutils.

## How do I fix CVE-2025-11083?

Apply the vendor's patch.

## Is CVE-2025-11083 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-11083 exists.

## Other vulnerabilities in Gnu Binutils

- [CVE-2017-7614](https://insights.sbomify.com/CVE-2017-7614/): Null dereference in n/a (critical 9.8)
- [CVE-2014-9939](https://insights.sbomify.com/CVE-2014-9939/): Memory corruption in n/a (critical 9.8)
- [CVE-2017-7226](https://insights.sbomify.com/CVE-2017-7226/): Information disclosure in n/a (critical 9.1)
- [CVE-2017-6969](https://insights.sbomify.com/CVE-2017-6969/): Information disclosure in n/a (critical 9.1)
- [CVE-2020-19726](https://insights.sbomify.com/CVE-2020-19726/): Denial of service in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-11083 and fix it if it is affected.

What it is: CVE-2025-11083 is a medium-severity memory corruption vulnerability in Gnu Binutils, published on 27 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-11083 exists.

Affected product: Gnu Binutils. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-11083/ (Markdown: https://insights.sbomify.com/CVE-2025-11083/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-11083
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-11083
- OSV: https://osv.dev/vulnerability/CVE-2025-11083

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-11083/
Summaries are generated and may contain mistakes; the official description above is the record.