CVE-2016-1283: Fedoraproject Fedora

Critical severity, CVSS 9.8. EPSS: 7.8% chance of exploitation in the next 30 days.

The pcre_compile2 function in pcre_compile.c in PCRE 8.38 mishandles the /((?:F?+(?:^(?(R)a+\"){99}-))(?J)(?'R'(?'R'<((?'RR'(?'R'\){97)?J)?J)(?'R'(?'R'\){99|(:(?|(?'R')(\k'R')|((?'R')))H'R'R)(H'R))))))/ pattern and related patterns with named subgroups, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

Affected products

• Fedoraproject Fedora: version 22 only; version 23 only
• Oracle Solaris: version 11.3 only
• Pcre Pcre: version 8.38 only
• PHP PHP: from 5.6.0, before 5.6.32 (fixed in 5.6.32); from 7.0.0, before 7.0.25 (fixed in 7.0.25); from 7.1.0, before 7.1.11 (fixed in 7.1.11)

Published 2016-01-03. Last modified 2026-06-17.