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We want to fix low-memory issues in glibc such that we operate reliably on memory-constrained containers and low-memory high-density VMs.

We want this backport from 2.28 stable:

[BZ #21716]
* time/tzfile.c (__tzfile_read): Check for memory exhaustion
when registering time zone abbreviations.

(cherry picked from commit e4e4fde51a309801af5eed72d3494cbf4b7737aa)

https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=e7388e5134471ef965bd48bafc71ba71eb8bf017