An issue was discovered in the Linux kernel before 5.11.11. The netfilter subsystem allows attackers to cause a denial of service (panic) because net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h lack a full memory barrier upon the assignment of a new table value, aka CID-175e476b8cdf.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | - | 5.11.11 |
| fedoraproject / fedora | 32 | 32.x |
| fedoraproject / fedora | 33 | 33.x |
| fedoraproject / fedora | 34 | 34.x |
| debian / debian_linux | 9.0 | 9.0.x |