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  1. RHEL
  2. RHEL-17319

glibc: Improved compatibility with underlinked objects with implicit dependencies on libc.so.6 [rhel-9]

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    • rhel-9.4
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      .Applications using incomplete ELF dependency information no longer terminate unexpectedly

      Previously, applications using incomplete ELF dependency information could terminate unexpectedly due to a `glibc` dynamic linker optimization that could change the relocation order of such applications, which resulted in objects with implicit dependencies on `glibc` being relocated before `glibc`. With this update, the issue has been fixed, and such applications now start as expected.
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      .Applications using incomplete ELF dependency information no longer terminate unexpectedly Previously, applications using incomplete ELF dependency information could terminate unexpectedly due to a `glibc` dynamic linker optimization that could change the relocation order of such applications, which resulted in objects with implicit dependencies on `glibc` being relocated before `glibc`. With this update, the issue has been fixed, and such applications now start as expected.
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      The default ELF dependency sorter may produce a relocation order which relocates objects with implicit dependencies on libc.so.6 before libc.so.6, causing IFUNC resolvers in libc.so.6 to crash.

      (Manual clone of RHEL-16825.)

              fweimer@redhat.com Florian Weimer
              fweimer@redhat.com Florian Weimer
              Florian Weimer Florian Weimer
              Sergey Kolosov Sergey Kolosov
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