The maximum scale is 6 (K, M, G, T, P, E) (B is 0).
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Authored by brooks on Apr 12 2017, 10:33 PM.

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jmg
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emaste

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rS316766: Correct an out of bounds read with HN_AUTOSCALE and very large numbers.

Summary

Overly large explict scales were checked correctly, but for sufficently
large numbers HN_AUTOSCALE would get to 7 resulting in an out of bounds
read.

Found with humanize_number_test and CHERI bounds checking.

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rS FreeBSD src repository - subversion

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Event Timeline

brooks created this revision.Apr 12 2017, 10:33 PM

Harbormaster completed remote builds in B8704: Diff 27389.Apr 12 2017, 10:33 PM

emaste accepted this revision.Apr 12 2017, 11:04 PM

This revision is now accepted and ready to land.Apr 12 2017, 11:04 PM

Closed by commit rS316766: Correct an out of bounds read with HN_AUTOSCALE and very large numbers. (authored by brooks). · Explain WhyApr 13 2017, 3:49 PM

This revision was automatically updated to reflect the committed changes.

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head/

lib/

libutil/

humanize_number.c

4 lines

Diff 27412

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head/lib/libutil/humanize_number.c

The maximum scale is 6 (K, M, G, T, P, E) (B is 0).ClosedPublicActions