CVE-2019-19956 xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs

Description

xmlParseBalancedChunkMemoryRecover in parser.c in libxml2 before 2.9.10 has a memory leak related to newDoc->oldNs.

Affected products and versions

Product	Affected versions	Fixed in
n/a	Versions not published
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1	3.1.0 → < 3.1.5	3.1.5
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1	3.1.0 → < 3.1.5	3.1.5
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1	3.1.0 → < 3.1.5	3.1.5

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