It was discovered that the cls_route filter implementation in the Linux kernel would not remove an old filter from the hashtable before freeing it if its handle had the value 0.
| Software | From | Fixed in |
|---|---|---|
| canonical / ubuntu_linux | 14.04 | 14.04.x |
| canonical / ubuntu_linux | 20.04 | 20.04.x |
| canonical / ubuntu_linux | 16.04 | 16.04.x |
| canonical / ubuntu_linux | 18.04 | 18.04.x |
| canonical / ubuntu_linux | 22.04 | 22.04.x |
| linux / linux_kernel | 5.16 | 5.18.18 |
| linux / linux_kernel | 5.19 | 5.19.2 |
| linux / linux_kernel | 4.10 | 4.14.291 |
| linux / linux_kernel | 4.15 | 4.19.256 |
| linux / linux_kernel | 4.20 | 5.4.211 |
| linux / linux_kernel | 5.5 | 5.10.137 |
| linux / linux_kernel | 5.11 | 5.15.61 |
| linux / linux_kernel | - | 4.9.326 |