An issue was discovered in the Linux kernel through 5.11.10.
drivers/net/ethernet/freescale/gianfar.c in the Freescale Gianfar Ethernet
driver allows attackers to cause a system crash because a negative fragment
size is calculated in situations involving an rx queue overrun when jumbo
packets are used and NAPI is enabled, aka CID-d8861bab48b6.

It was discovered that the Freescale Gianfar Ethernet driver for the Linux
kernel did not properly handle receive queue overrun when jumbo frames were
enabled in some situations. An attacker could use this to cause a denial of
service (system crash).