decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data. Reference and upstream patch: https://git.busybox.net/busybox/commit/?id=f25d254dfd4243698c31a4f3153d4ac72aa9e9bd
Created busybox tracking bugs for this issue: Affects: fedora-all [bug 1941029]
Support for gunzip was introduced in busybox-1.20, therefore version of busybox shipped with Red Hat Enterprise Linux 6 is not affected by this flaw.
Statement: Support for gunzip was introduced in busybox-1.20, therefore version of busybox shipped with Red Hat Enterprise Linux 6 is not affected by this flaw.