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Description: ipc/shm: Fix shmat mmap nil-page protection
References:
Notes:
carnil> Fix in linux-next: https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=e1d35d4dc7f089e6c9c080d556feedf9c706f0c7
bwh> Confirmed this affects 3.2 with a simple test program
Bugs:
https://bugzilla.kernel.org/show_bug.cgi?id=192931
upstream: released (4.11-rc1) [95e91b831f87ac8e1f8ed50c14d709089b4e01b8]
4.9-upstream-stable: released (4.9.14) [270e84a1e6effd6c0c6e9b13b196b5fdaa392954]
3.16-upstream-stable: released (3.16.42) [ipc-shm-fix-shmat-mmap-nil-page-protection.patch]
3.2-upstream-stable: released (3.2.87) [ipc-shm-fix-shmat-mmap-nil-page-protection.patch]
sid: released (4.9.13-1) [bugfix/all/ipc-shm-fix-shmat-mmap-nil-page-protection.patch]
3.16-jessie-security: released (3.16.39-1+deb8u2) [bugfix/all/ipc-shm-Fix-shmat-mmap-nil-page-protection.patch]
3.2-wheezy-security: released (3.2.86-1) [bugfix/all/ipc-shm-fix-shmat-mmap-nil-page-protection.patch]
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