GNU Screen - Bugs: bug #45714, read access violation in...

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bug #45714: read access violation in MWrapChar()

Submitter:	Kuang-che Wu <kcwu>
Submitted:	Fri 07 Aug 2015 02:07:13 PM UTC


Category:	Crash/Freeze/Infloop	Severity:	3 - Normal
Priority: *	5 - Normal	Status:	None
Privacy:	Public	Assigned to:	None
Open/Closed:	Open	Release:	None
Fixed Release:	None	Planned Release:	None
Work Required:	None

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Discussion

Fri 07 Aug 2015 02:10:47 PM UTC, comment #1: ah, sorry, the reproduce step and the description mismatch. the reproduce step should be $ screen -D -m printf '\x1b[?3h0' this issue is detected by afl-fuzz	Kuang-che Wu <kcwu>
Fri 07 Aug 2015 02:07:13 PM UTC, original submission: How to reproduce $ screen -D -m printf '\x1b[8;;1t\xe3\x80\xb4\x1b[P' It crashed inside MWrapChar() with y=-1 at line copy_mchar2mline(&mchar_null, ml, p->w_width); which access to ml->image but ml is invalid due to ml = &p->w_mlines[y];	Kuang-che Wu <kcwu>

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