# CVE-2026-43104: drm/vc4: Fix a memory leak in hang state error path

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2026-05-06 · Updated: 2026-06-01

## Affected

- Linux: version range not reported
- Linux: 4.5

## Description

In the Linux kernel, the following vulnerability has been resolved: drm/vc4: Fix a memory leak in hang state error path When vc4_save_hang_state() encounters an early return condition, it returns without freeing the previously allocated `kernel_state`, leaking memory. Add the missing kfree() calls by consolidating the early return paths into a single place.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
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  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43104

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/c197def3834cbee3fd824ce4c57d08cb24e18955
- https://git.kernel.org/stable/c/9487daa18e627ac6b5ed5911be79f23362554b70
- https://git.kernel.org/stable/c/259e2bba3fd7005c62cbd42365a48b3221b244e3
- https://git.kernel.org/stable/c/dd5c49787a32da96a2b154427eb17cbf12a83c28
- https://git.kernel.org/stable/c/d8fdd6adc07b78ad3e9ee0004876d90cb59ca941
- https://git.kernel.org/stable/c/e352e9adc9f6df54d63150ff832f71c04e30744b
- https://git.kernel.org/stable/c/3eb7dd55021d0f4308fbea0bea21d2118984d8e7
- https://git.kernel.org/stable/c/9525d169e5fd481538cf8c663cc5839e54f2e481

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Page: https://cve.now/CVE-2026-43104
JSON: https://cve.now/api/v1/entries/CVE-2026-43104
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