The net_checksum_calculate function in net/checksum.c in QEMU allows local guest OS users to cause a denial of service (out-of-bounds heap read and crash) via the payload length in a crafted packet.
Exploitability
AV:LAC:LPR:LUI:NScope
S:CImpact
C:HI:NA:H8.4/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:H