[Bug 295991] lib/libc posix_spawnp(): PATH-search child runs on an undersized rfork_thread stack and underflows into the caller's heap (heavily-linked processes; PHP proc_open)

bugzilla-noreply Thu, 11 Jun 2026 02:40:54 -0700

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295991


[email protected] changed:

           What    |Removed                     |Added
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                 CC|                            |[email protected]

--- Comment #1 from [email protected] ---
I can confirm this to be an issue in FreeBSD 15.0-RELEASE-p10 and PHP 8.4.22
(cli) (built: Jun 6, 2026, 19:05:19).

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[Bug 295991] lib/libc posix_spawnp(): PATH-search child runs on an undersized rfork_thread stack and underflows into the caller's heap (heavily-linked processes; PHP proc_open)

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