Diffusion FreeBSD src repository 32026f5983ed

sys_procctl(): zero the data buffer once, on syscall entry
32026f5983ed
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Description

sys_procctl(): zero the data buffer once, on syscall entry

and remove zeroing of it from specific functions. This way it is
guaranteed that we do not leak kernel data.

Suggested by: markj
Reviewed by: emaste, markj
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D32513

Details

Provenance

kib	Authored on Oct 16 2021, 6:28 PM

Reviewer

emaste

Differential Revision

D32513: procctl: require debug privileges over the target for most of the _CTL commands

Parents

rG56d5323b4d7d: sys_procctl(): use table data to do copyin/copyout

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Event Timeline

kib committed rG32026f5983ed: sys_procctl(): zero the data buffer once, on syscall entry (authored by kib).Oct 19 2021, 8:04 PM

kib added an edge: D32513: procctl: require debug privileges over the target for most of the _CTL commands.

kib mentioned this in rG84722e8171a0: sys_procctl(): zero the data buffer once, on syscall entry.Oct 26 2021, 2:37 AM

Changes (1)

Path

Size

sys/

kern/

kern_procctl.c

rG32026f5983ed

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