When unwinding through a signal frame the backtrace function on PowerPC didn't check array bounds when storing the frame address.
Created glibc tracking bugs for this issue:
Affects: fedora-all [bug 1811589]
This flaw did not affect the versions of `glibc` as shipped with Red Hat Enterprise Linux 5, 6, and 7, as they did not include the vulnerable code, which was introduced in a later version of the package.
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2020:4444 https://access.redhat.com/errata/RHSA-2020:4444
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):