# CVE-2024-26735: ipv6: sr: fix possible use-after-free and null-ptr-deref

> A use-after-free and null pointer dereference in the Linux kernel IPv6 Segment Routing subsystem can lead to system crashes or potential code execution.

- **Severity:** Medium 5.5 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **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:** 3 Apr 2024
- **Updated:** 11 May 2026
- **Also known as:** BELL-CVE-2024-26735, DEBIAN-CVE-2024-26735, GHSA-vmh5-6rg4-ggmq, UBUNTU-CVE-2024-26735

## What is CVE-2024-26735?

CVE-2024-26735 is a medium-severity use after free vulnerability in Debian Debian Linux, published on 3 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In the Linux kernel, the following vulnerability has been resolved:

ipv6: sr: fix possible use-after-free and null-ptr-deref

The pernet operations structure for the subsystem must be registered
before registering the generic netlink family.

Weakness: CWE-476 (NULL Pointer Dereference), CWE-416 (Use After Free)

## Which versions are affected by CVE-2024-26735?

It affects 10 products.


Products: Debian Debian Linux, Linux kernel, Netapp 8300 Firmware, Netapp 8700 Firmware, Netapp A400 Firmware, Netapp C400 Firmware, Netapp E-Series Santricity Os Controller, Netapp H610c Firmware, Netapp H610s Firmware, Netapp H615c Firmware.

## How do I fix CVE-2024-26735?

Apply the vendor's patch.

## Is CVE-2024-26735 being exploited?

There is no known exploitation of CVE-2024-26735 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-26735 and fix it if it is affected.

What it is: CVE-2024-26735 is a medium-severity use after free vulnerability in Debian Debian Linux, published on 3 Apr 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-26735 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2024-26735/ (Markdown: https://insights.sbomify.com/CVE-2024-26735/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-26735
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-26735
- OSV: https://osv.dev/vulnerability/CVE-2024-26735

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-26735/
Summaries are generated and may contain mistakes; the official description above is the record.