diff options
| author | Siddhesh Poyarekar <siddhesh@sourceware.org> | 2017-03-07 20:52:04 +0530 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2017-07-13 11:36:20 -0300 |
| commit | ceeb0740ed04c48170f9f6f15fef55637ad84e1b (patch) | |
| tree | 2adf4d58544aa760f7fe33a82dd1c3c6c32a0db8 /ChangeLog | |
| parent | 24adabbe17d24b9cf4f42d81f546359f72515ce3 (diff) | |
| download | glibc-linaro/2.23/master.tar.gz | |
Ignore and remove LD_HWCAP_MASK for AT_SECURE programs (bug #21209)linaro/2.23/master
The LD_HWCAP_MASK environment variable may alter the selection of
function variants for some architectures. For AT_SECURE process it
means that if an outdated routine has a bug that would otherwise not
affect newer platforms by default, LD_HWCAP_MASK will allow that bug
to be exploited.
To be on the safe side, ignore and disable LD_HWCAP_MASK for setuid
binaries.
[BZ #21209]
* elf/rtld.c (process_envvars): Ignore LD_HWCAP_MASK for
AT_SECURE processes.
* sysdeps/generic/unsecvars.h: Add LD_HWCAP_MASK.
(cherry picked from commit 1c1243b6fc33c029488add276e56570a07803bfd)
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -1,3 +1,10 @@ +2017-03-07 Siddhesh Poyarekar <siddhesh@sourceware.org> + + [BZ #21209] + * elf/rtld.c (process_envvars): Ignore LD_HWCAP_MASK for + AT_SECURE processes. + * sysdeps/generic/unsecvars.h: Add LD_HWCAP_MASK. + 2017-06-19 Florian Weimer <fweimer@redhat.com> * elf/rtld.c (audit_list_string): New variable. |