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authorSiddhesh Poyarekar <siddhesh@sourceware.org>2017-02-02 15:48:06 +0530
committerSiddhesh Poyarekar <siddhesh@sourceware.org>2017-02-02 15:50:24 +0530
commited8d5ffd0a14e84298a15ae2ec9b799010166b28 (patch)
tree6cabcdeec197523b72b6e88a1910cd97176f766d /scripts/lib-names.awk
parent8b9e9c3c0bae497ad5e2d0ae2f333f62feddcc12 (diff)
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Drop GLIBC_TUNABLES for setxid programs when tunables is disabled (bz #21073)
A setxid program that uses a glibc with tunables disabled may pass on GLIBC_TUNABLES as is to its child processes. If the child process ends up using a different glibc that has tunables enabled, it will end up getting access to unsafe tunables. To fix this, remove GLIBC_TUNABLES from the environment for setxid process. * sysdeps/generic/unsecvars.h: Add GLIBC_TUNABLES. * elf/tst-env-setuid-tunables.c (test_child_tunables)[!HAVE_TUNABLES]: Verify that GLIBC_TUNABLES is removed in a setgid process.
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