In the Linux kernel before 5.6.1, drivers/media/usb/gspca/xirlink_cit.c (aka the Xirlink camera USB driver) mishandles invalid descriptors, aka CID-a246b4d54770.
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.1
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a246b4d547708f33ff4d4b9a7a5dbac741dc89d8
github.com/torvalds/linux/commit/a246b4d547708f33ff4d4b9a7a5dbac741dc89d8
lists.debian.org/debian-lts-announce/2020/06/msg00011.html
lists.debian.org/debian-lts-announce/2020/06/msg00012.html
lists.debian.org/debian-lts-announce/2020/06/msg00013.html
security.netapp.com/advisory/ntap-20200430-0004/
usn.ubuntu.com/4345-1/
usn.ubuntu.com/4364-1/
usn.ubuntu.com/4368-1/
usn.ubuntu.com/4369-1/
www.debian.org/security/2020/dsa-4698