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Date: Tue, 11 Apr 2023 12:22:34 +0100
From: Sevan Janiyan <>
Subject: CVE-2017-11164 - stack exhaustion in PCRE

CVE-2017-11164 landed some years back[1] for PCRE 8.x and is marked
up with a high base score on the article[2], yet no fix was ever listed 
and is still commonly packaged, so I asked Philip Hazel (the PCRE 
maintainer) regarding the issue, and this is what Philip said

"Stack exhaustion is a FEP (frequently encountered problem) in PCRE1
(the 8.xx series). There are various limiting options that the user can
apply to limit stack usage.


The code in PCRE2 has been re-written so as to use heap storage instead
of the stack when executing patterns, thus getting rid of a problem that
lots of people encountered with PCRE1."

"PCRE1 has become totally obsolete and is no longer maintained. The
final release was 8.45 (June 2021)"

So just a heads up if you're still linking against PCRE 8.x but software
in question supports PCRE2, perhaps it's time to switch and default to


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