Differential D48499

ktrace: Fix uninitialized memory disclosure
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Authored by markj on Fri, Jan 17, 2:21 PM.

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jfree
emaste

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rG99d5ee8738a3: ktrace: Fix uninitialized memory disclosure
rG5b86888bae65: ktrace: Fix uninitialized memory disclosure

Summary

The sockaddr passed to ktrcapfail() may be smaller than
sizeof(struct sockaddr), and the trailing bytes in the sockaddr
structure will be uninitialized, whereupon they get copied out to
userspace.

PR: 283673
Reported by: Yichen Chai <yichen.chai@gmail.com>
Reported by: Zhuo Ying Jiang Li <zyj20@cl.cam.ac.uk>
Fixes: 9bec84131215 ("ktrace: Record detailed ECAPMODE violations")

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rG FreeBSD src repository

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Build Status

Buildable 61783
Build 58667: arc lint + arc unit

Event Timeline

markj created this revision.Fri, Jan 17, 2:21 PM

Herald added subscribers: olce, imp. · View Herald TranscriptFri, Jan 17, 2:21 PM

markj requested review of this revision.Fri, Jan 17, 2:21 PM

Harbormaster completed remote builds in B61783: Diff 149452.Fri, Jan 17, 2:22 PM

emaste accepted this revision.Fri, Jan 17, 2:41 PM

This revision is now accepted and ready to land.Fri, Jan 17, 2:41 PM

jfree accepted this revision.Sun, Jan 19, 10:08 PM

Closed by commit rG5b86888bae65: ktrace: Fix uninitialized memory disclosure (authored by markj). · Explain WhyMon, Jan 20, 1:55 PM

This revision was automatically updated to reflect the committed changes.

markj added a commit: rG5b86888bae65: ktrace: Fix uninitialized memory disclosure.

markj added a commit: rG99d5ee8738a3: ktrace: Fix uninitialized memory disclosure.Mon, Jan 20, 10:10 PM

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Path

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sys/

kern/

11 lines

Diff 149452

sys/kern/kern_ktrace.c

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