Total vulnerabilities in the database
Since Linux kernel version 3.2, the mremap() syscall performs TLB flushes after dropping pagetable locks. If a syscall such as ftruncate() removes entries from the pagetables of a task that is in the middle of mremap(), a stale TLB entry can remain for a short time that permits access to a physical page after it has been released back to the page allocator and reused. This is fixed in the following kernel versions: 4.9.135, 4.14.78, 4.18.16, 4.19.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 4.9.136 | 4.14.78 |
| linux / linux_kernel | 3.2 | 4.9.135 |
| linux / linux_kernel | 4.18.17 | 4.19 |
| linux / linux_kernel | 4.14.79 | 4.18.16 |
| canonical / ubuntu_linux | 16.04 | 16.04.x |
| canonical / ubuntu_linux | 14.04 | 14.04.x |
| canonical / ubuntu_linux | 12.04 | 12.04.x |
| canonical / ubuntu_linux | 18.04 | 18.04.x |
| canonical / ubuntu_linux | 18.10 | 18.10.x |
| debian / debian_linux | 8.0 | 8.0.x |