Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A flaw was found in BusyBox's volume_id FAT prober. A magic string in the boot sector, such as "FAT16   ", skips the geometry checks, so a sectors_per_cluster value of 0 can be used as a divisor, causing a divide-by-zero (SIGFPE) crash. A crafted filesystem image on an attached device triggers this when probed by blkid, findfs or mount LABEL=/UUID=, which probe every device in /proc/partitions; the crash prevents those applets from resolving any device and may fail boot or hotplug scripts that rely on them.