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heap-use-after-free in S_unshare_hek_or_pvn (hv.c:2857) #15687
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From @geeknikTriggered in Perl v5.25.7 (v5.25.6-71-gac15b3d) with AFL+ASAN. Does not ==28151==ERROR: AddressSanitizer: heap-use-after-free on address 0x60200000dfba is located 0 bytes to the right of 10-byte region previously allocated by thread T0 (0) here: SUMMARY: AddressSanitizer: heap-use-after-free /root/perl/hv.c:2857 |
From @geeknik |
From @tonycozOn Wed, 26 Oct 2016 20:45:10 -0700, brian.carpenter@gmail.com wrote:
Here's a minimized version: *p= *$p= $| = *$p = $p |= *$p = *p = $p = \p Changing the \p to some other reference, like \w, fails differently: Can't coerce GLOB to string in bitwise or (|) at ../129975b.pl line 1. I suspect another stack refcounting bug. Tony |
The RT System itself - Status changed from 'new' to 'open' |
From @tonycozOn Mon, 07 Nov 2016 16:13:18 -0800, tonyc wrote:
I'm surer of it now, so making it public, since we haven't been treating such issues as security issues. Tony |
Migrated from rt.perl.org#129975 (status was 'open')
Searchable as RT129975$
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