blktrace (aka Block IO Tracing) 1.2.0, as used with the Linux kernel and Android, has a buffer overflow in the dev_map_read function in btt/devmap.c because the device and devno arrays are too small, as demonstrated by an invalid free when using the btt program with a crafted file.
git.kernel.dk/?p=blktrace.git;a=log;h=d61ff409cb4dda31386373d706ea0cfb1aaac5b7
www.securityfocus.com/bid/104142
access.redhat.com/errata/RHSA-2019:2162
git.kernel.org/pub/scm/linux/kernel/git/axboe/blktrace.git/commit/?id=d61ff409cb4dda31386373d706ea0cfb1aaac5b7
security.gentoo.org/glsa/202107-15
www.spinics.net/lists/linux-btrace/msg00847.html