procdesc: Disallow pddupfd() of non-passable files
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Authored by markj on Jul 22 2026, 8:14 PM.

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	F171744353: D58403.diff
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kib

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rG91e11c8f2b38: procdesc: Disallow pddupfd() of non-passable files

Summary

Fixes: 1ad21a652182 ("kern: add pddupfd(2)")
Reported by: Maik Muench of Secfault Security

Diff Detail

Repository

rG FreeBSD src repository

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Unit

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Build Status

Buildable 75024
Build 71907: arc lint + arc unit

Event Timeline

markj created this revision.Jul 22 2026, 8:14 PM

Herald added subscribers: ziaee, olce, imp. · View Herald TranscriptJul 22 2026, 8:14 PM

markj requested review of this revision.Jul 22 2026, 8:14 PM

Harbormaster completed remote builds in B75024: Diff 182479.Jul 22 2026, 8:14 PM

markj added a parent revision: D58402: kqueue: Allocate marker knotes on the stack.Jul 22 2026, 8:14 PM

Fix double fdrop

Harbormaster completed remote builds in B75025: Diff 182480.Jul 22 2026, 8:18 PM

kib accepted this revision.Jul 22 2026, 11:34 PM

This revision is now accepted and ready to land.Jul 22 2026, 11:34 PM

Closed by commit rG91e11c8f2b38: procdesc: Disallow pddupfd() of non-passable files (authored by markj). · Explain WhyJul 24 2026, 9:07 PM

This revision was automatically updated to reflect the committed changes.

markj added a commit: rG91e11c8f2b38: procdesc: Disallow pddupfd() of non-passable files.

Revision Contents
Changeset List

Path

Size

lib/

libsys/

pdfork.2

6 lines

sys/

kern/

sys_procdesc.c

12 lines

Diff 182479

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lib/libsys/pdfork.2