Mailing List Archive

[Bug 3072] New: Safer coding
https://bugs.exim.org/show_bug.cgi?id=3072

Bug ID: 3072
Summary: Safer coding
Product: Exim
Version: 4.97
Hardware: All
OS: All
Status: NEW
Severity: bug
Priority: medium
Component: Unfiled
Assignee: unallocated@exim.org
Reporter: exim@aitchison.me.uk
CC: exim-dev@lists.exim.org

function_store_malloc() and function_store_get()
are given a size_t (unsigned long, 64bit on many current machines)
which is cast/truncated to int (signed 32bit on many machines).

If PCRE2 should request a large (say >4GB) amount of store and use it, things
will go bang.

Existing patch
https://bugs.exim.org/attachment.cgi?id=1464
- written for 3047 - should suffice.

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