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elf: Add GLIBC_TUNABLES to unsecvars
authorAdhemerval Zanella <adhemerval.zanella@linaro.org>
Mon, 6 Nov 2023 20:25:35 +0000 (17:25 -0300)
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>
Tue, 21 Nov 2023 19:15:42 +0000 (16:15 -0300)
commita72a4eb10b2d9aef7a53f9d2facf166a685d85fb
tree13139f4c794d9e60c851b99f73ac3771ff09d9eetree
parent6c6fce572fb8f583f14d898e54fd7d25ae91cf56commit | diff
elf: Add GLIBC_TUNABLES to unsecvars

setuid/setgid process now ignores any glibc tunables, and filters out
all environment variables that might changes its behavior. This patch
also adds GLIBC_TUNABLES, so any spawned process by setuid/setgid
processes should set tunable explicitly.

Checked on x86_64-linux-gnu.

Reviewed-by: Florian Weimer <fweimer@redhat.com>
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
elf/tst-env-setuid-tunables.c diff | blob | blame | history
sysdeps/generic/unsecvars.h diff | blob | blame | history
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