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| author | Carlos O'Donell <carlos@redhat.com> | 2013-09-23 00:52:09 -0400 |
|---|---|---|
| committer | Carlos O'Donell <carlos@redhat.com> | 2013-09-23 00:52:09 -0400 |
| commit | c61b4d41c9647a54a329aa021341c0eb032b793e (patch) | |
| tree | c4a665c232a7d37786a6f3b5e3f56d0ae11480e8 /sysdeps/generic/stackguard-macros.h | |
| parent | 58a96064d193317236b740998e134b652d3d62ad (diff) | |
| download | glibc-c61b4d41c9647a54a329aa021341c0eb032b793e.tar.gz glibc-c61b4d41c9647a54a329aa021341c0eb032b793e.tar.xz glibc-c61b4d41c9647a54a329aa021341c0eb032b793e.zip | |
BZ #15754: CVE-2013-4788
The pointer guard used for pointer mangling was not initialized for static applications resulting in the security feature being disabled. The pointer guard is now correctly initialized to a random value for static applications. Existing static applications need to be recompiled to take advantage of the fix. The test tst-ptrguard1-static and tst-ptrguard1 add regression coverage to ensure the pointer guards are sufficiently random and initialized to a default value.
Diffstat (limited to 'sysdeps/generic/stackguard-macros.h')
| -rw-r--r-- | sysdeps/generic/stackguard-macros.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sysdeps/generic/stackguard-macros.h b/sysdeps/generic/stackguard-macros.h index ababf65d37..4fa3d96f79 100644 --- a/sysdeps/generic/stackguard-macros.h +++ b/sysdeps/generic/stackguard-macros.h @@ -2,3 +2,6 @@ extern uintptr_t __stack_chk_guard; #define STACK_CHK_GUARD __stack_chk_guard + +extern uintptr_t __pointer_chk_guard_local; +#define POINTER_CHK_GUARD __pointer_chk_guard_local |