There is a new pull request by ericonr against master on the void-packages repository

https://github.com/ericonr/void-packages firej
https://github.com/void-linux/void-packages/pull/28592

firejail: update to 0.9.64.4.
Fixes a root privilege escalation bug by disabling the overlayfs
functionality completely.

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#### General
- [ ] This is a new package and it conforms to the [quality requirements](https://github.com/void-linux/void-packages/blob/master/Manual.md#quality-requirements)

#### Have the results of the proposed changes been tested?
- [ ] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [ ] I generally don't use the affected packages but briefly tested this PR

@Duncaen 

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A patch file from https://github.com/void-linux/void-packages/pull/28592.patch is attached