Dirty COW: Local privilege escalation via kernel race condition — affects all Linux kernels 2.6.22-4.8.3. PoC is trivially available. Apply patches for your distribution immediately. Container workloads on shared hosts are particularly vulnerable to this via breakout.
Race condition in mm/gup.c in the Linux kernel allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging incorrect handling of a copy-on-write (COW) feature. Dirty COW.
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