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| author | Florian Weimer <fweimer@redhat.com> | 2015-10-15 09:23:07 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2015-10-15 09:23:32 +0200 |
| commit | a014cecd82b71b70a6a843e250e06b541ad524f7 (patch) | |
| tree | d402fc41e0212d4feb335c39972752fc5e320d3a /sysdeps | |
| parent | 0c25f5b5bb48a9d550b5fb403b9a801ba04c146f (diff) | |
| download | glibc-a014cecd82b71b70a6a843e250e06b541ad524f7.tar.gz glibc-a014cecd82b71b70a6a843e250e06b541ad524f7.tar.xz glibc-a014cecd82b71b70a6a843e250e06b541ad524f7.zip | |
Always enable pointer guard [BZ #18928]
Honoring the LD_POINTER_GUARD environment variable in AT_SECURE mode
has security implications. This commit enables pointer guard
unconditionally, and the environment variable is now ignored.
[BZ #18928]
* sysdeps/generic/ldsodefs.h (struct rtld_global_ro): Remove
_dl_pointer_guard member.
* elf/rtld.c (_rtld_global_ro): Remove _dl_pointer_guard
initializer.
(security_init): Always set up pointer guard.
(process_envvars): Do not process LD_POINTER_GUARD.
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/generic/ldsodefs.h | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index 7f7ff72f88..0625826c3b 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -592,9 +592,6 @@ struct rtld_global_ro /* List of auditing interfaces. */ struct audit_ifaces *_dl_audit; unsigned int _dl_naudit; - - /* 0 if internal pointer values should not be guarded, 1 if they should. */ - EXTERN int _dl_pointer_guard; }; # define __rtld_global_attribute__ # if IS_IN (rtld) |