SUSE-SU-2017:3319-1 Security update for the Linux Kernel (Live Patch 1 for SLE 12 SP3)

This update for the Linux Kernel 4.4.82-63 fixes several issues. The following security issues were fixed: - CVE-2017-1000405: Problematic use of pmdmkdirty in the touchpmd function allowed users to overwrite read-only huge pages e.g. the zero huge page and sealed shmem files bsc1070307. -...

SUSE-SU-2017:3317-1 Security update for the Linux Kernel (Live Patch 4 for SLE 12 SP3)

This update for the Linux Kernel 4.4.90-612 fixes several issues. The following security issues were fixed: - CVE-2017-1000405: Problematic use of pmdmkdirty in the touchpmd function allowed users to overwrite read-only huge pages e.g. the zero huge page and sealed shmem files bsc1070307. -...

CVE-2017-1000405: Concurrent Execution using Shared Resource with Improper Synchronization

The Linux Kernel versions 2.6.38 through 4.14 have a problematic use of pmdmkdirty in the touchpmd function inside the THP implementation. touchpmd can be reached by getuserpages. In such case, the pmd will become dirty. This scenario breaks the new canfollowwritepmd's logic - pmd can become dirt...