Differential D59202

linux: cap mount id to INT_MAX
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Authored by aokblast on Aug 26 2026, 8:46 PM.

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imp

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linuxkpi

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rG23626eb9e3d6: linux: cap mount id to INT_MAX

Summary

linux stores mount id as a int32_t, using xor would make it becomes
negative in some cases. As a result, we cap the value to INT_MAX to
prevent getting a negative value from userspace.

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rG FreeBSD src repository

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Event Timeline

aokblast created this revision.Aug 26 2026, 8:46 PM

Herald added a subscriber: imp. · View Herald TranscriptAug 26 2026, 8:46 PM

aokblast requested review of this revision.Aug 26 2026, 8:46 PM

Harbormaster completed remote builds in B76193: Diff 185168.Aug 26 2026, 8:46 PM

aokblast added a reviewer: linuxkpi.Aug 26 2026, 8:52 PM

This revision was not accepted when it landed; it landed in state Needs Review.Tue, Oct 13, 7:28 PM

Closed by commit rG23626eb9e3d6: linux: cap mount id to INT_MAX. · Explain Why

This revision was automatically updated to reflect the committed changes.

aokblast added a commit: rG23626eb9e3d6: linux: cap mount id to INT_MAX.

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sys/

compat/

linprocfs/

linprocfs.c

3 lines

Diff 189776

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sys/compat/linprocfs/linprocfs.c

linux: cap mount id to INT_MAXClosedPublicActions