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Differential D48499

ktrace: Fix uninitialized memory disclosure
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Authored by markj on Jan 17 2025, 2:21 PM.
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jfree
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Commits
rG10f8a9df522f: ktrace: Fix uninitialized memory disclosure
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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sys/
kern/
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sys/kern/kern_ktrace.c

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