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Bugs fixes in "zsh"

Origin Bug number Title Date fixed
CVE CVE-2018-7549 In params.c in zsh through 5.4.2, there is a crash during a copy of an empty hash table, as demonstrated by typeset -p. 2018-03-08
CVE CVE-2017-18206 In utils.c in zsh before 5.4, symlink expansion had a buffer overflow. 2018-03-08
CVE CVE-2017-18205 In builtin.c in zsh before 5.4, when sh compatibility mode is used, there is a NULL pointer dereference during processing of the cd command with no a 2018-03-08
CVE CVE-2016-10714 In zsh before 5.3, an off-by-one error resulted in undersized buffers that were intended to support PATH_MAX characters. 2018-03-08
Launchpad 1355811 Please backport zsh 5.0.5 from utopic 2014-08-12
Launchpad 1355811 Please backport zsh 5.0.5 from utopic 2014-08-12
Launchpad 841489 zsh version 4.3.11-4ubuntu2.is.3ubuntu1 failed to build on armel 2011-12-18



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