tequilaOS/platform_system_sepolicy
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Merge "Support reading block apexes from system_server" am: 6d3bc08dbb am: 4ead13bfc9 am: 4412c7d16f

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Original change: https://android-review.googlesource.com/c/platform/system/sepolicy/+/1899604

Change-Id: I1d50c4ce6f15acebcafd0bde19461cd5c46a7408
This commit is contained in:
Richard Fung 2021-11-23 04:06:30 +00:00 committed by Automerger Merge Worker
commit 636a591f9c
1 changed files with 5 additions and 2 deletions
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private/system_server.te
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@ -1250,10 +1250,13 @@ neverallow system_server dex2oat_exec:file no_x_file_perms;
# https://bugs.chromium.org/p/project-zero/issues/detail?id=955 for example.
neverallow system_server data_file_type:file no_x_file_perms;
# The only block device system_server should be accessing is
# The only block device system_server should be writing to is
# the frp_block_device. This helps avoid a system_server to root
# escalation by writing to raw block devices.
neverallow system_server { dev_type -frp_block_device }:blk_file no_rw_file_perms;
# The system_server may need to read from vd_device if it uses
# block apexes.
neverallow system_server { dev_type -frp_block_device }:blk_file no_w_file_perms;
neverallow system_server { dev_type -frp_block_device -vd_device }:blk_file r_file_perms;
# system_server should never use JIT functionality
# See https://googleprojectzero.blogspot.com/2016/12/bitunmap-attacking-android-ashmem.html