CVE-2019-3837
It was found that the net_dma code in tcp_recvmsg() in the 2.6.32 kernel as shipped in RHEL6 is thread-unsafe. So an unprivileged multi-threaded userspace application calling recvmsg() for the same network socket in parallel executed on ioatdma-enabled hardware with net_dma enabled can leak the memory, crash the host leading to a denial-of-service or cause a random memory corruption.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 2.6.32 | 2.6.32.x |
| redhat / enterprise_linux | 6.0 | 6.0.x |
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