# CVE-2010-4263: Null dereference in n/a

> Remote attackers can cause a kernel panic via a VLAN tagged frame when SR-IOV and promiscuous mode are enabled without registered VLANs.

- **Severity:** High 7.9 (`AV:A/AC:M/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 18 Jan 2011
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-r256-54f5-47p8

## What is CVE-2010-4263?

CVE-2010-4263 is a high-severity vulnerability in Linux kernel, published on 18 Jan 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The igb_receive_skb function in drivers/net/igb/igb_main.c in the Intel Gigabit Ethernet (aka igb) subsystem in the Linux kernel before 2.6.34, when Single Root I/O Virtualization (SR-IOV) and promiscuous mode are enabled but no VLANs are registered, allows remote attackers to cause a denial of service (NULL pointer dereference and panic) and possibly have unspecified other impact via a VLAN tagged frame.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2010-4263?

It affects 3 products.


Products: Linux kernel, Vmware Esx, Vmware Esxi.

## How do I fix CVE-2010-4263?

Upgrade to a fixed version.

## Is CVE-2010-4263 being exploited?

There is no known exploitation of CVE-2010-4263 in the wild and no public exploit code.

## Other vulnerabilities in Linux kernel

- [CVE-2026-53266](https://insights.sbomify.com/CVE-2026-53266/): Linux Kernel Out-of-Bounds Write (high 8.8, exploited in the wild)
- [CVE-2013-6282](https://insights.sbomify.com/CVE-2013-6282/): Linux Kernel Improper Input Validation (high 8.8, exploited in the wild)
- [CVE-2022-0185](https://insights.sbomify.com/CVE-2022-0185/): Linux Kernel Heap-Based Buffer Overflow (high 8.4, exploited in the wild)
- [CVE-2013-2094](https://insights.sbomify.com/CVE-2013-2094/): Linux Kernel Privilege Escalation (high 8.4, exploited in the wild)
- [CVE-2026-53362](https://insights.sbomify.com/CVE-2026-53362/): Linux Kernel Unspecified (high 7.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2010-4263 and fix it if it is affected.

What it is: CVE-2010-4263 is a high-severity vulnerability in Linux kernel, published on 18 Jan 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2010-4263 in the wild and no public exploit code.

Affected product: Linux kernel. 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-2010-4263/ (Markdown: https://insights.sbomify.com/CVE-2010-4263/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-4263
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-4263
- OSV: https://osv.dev/vulnerability/CVE-2010-4263

---
From sbomify Insights: https://insights.sbomify.com/CVE-2010-4263/
Summaries are generated and may contain mistakes; the official description above is the record.