# CVE-2024-35847: irqchip/gic-v3-its: Prevent double free on error

> A double free vulnerability in the Linux kernel's GICv3 ITS driver can cause a system crash during error handling.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:** 17 May 2024
- **Updated:** 5 Aug 2026
- **Also known as:** BELL-CVE-2024-35847, DEBIAN-CVE-2024-35847, GHSA-8chq-hjc6-56vh, UBUNTU-CVE-2024-35847

## What is CVE-2024-35847?

CVE-2024-35847 is a high-severity use after free vulnerability in Debian Debian Linux, published on 17 May 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:

irqchip/gic-v3-its: Prevent double free on error

The error handling path in its_vpe_irq_domain_alloc() causes a double free
when its_vpe_init() fails after successfully allocating at least one
interrupt. This happens because its_vpe_irq_domain_free() frees the
interrupts along with the area bitmap and the vprop_page and
its_vpe_irq_domain_alloc() subsequently frees the area bitmap and the
vprop_page again.

Fix this by unconditionally invoking its_vpe_irq_domain_free() which
handles all cases correctly and by removing the bitmap/vprop_page freeing
from its_vpe_irq_domain_alloc().

[ tglx: Massaged change log ]

Weakness: CWE-415 (Double Free)

## Which versions are affected by CVE-2024-35847?

It affects 2 products.


Products: Debian Debian Linux, Linux kernel.

## How do I fix CVE-2024-35847?

Apply the vendor's patch.

## Is CVE-2024-35847 being exploited?

There is no known exploitation of CVE-2024-35847 in the wild and no public exploit code.

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- [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-2024-35847 and fix it if it is affected.

What it is: CVE-2024-35847 is a high-severity use after free vulnerability in Debian Debian Linux, published on 17 May 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-2024-35847 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-2024-35847/ (Markdown: https://insights.sbomify.com/CVE-2024-35847/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-35847
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-35847
- OSV: https://osv.dev/vulnerability/CVE-2024-35847

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-35847/
Summaries are generated and may contain mistakes; the official description above is the record.