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| author |   Paul Pluzhnikov <ppluzhnikov@google.com> | 2018-12-08 10:46:59 -0800 |
|---|---|---|
| committer | Paul Pluzhnikov <ppluzhnikov@google.com> | 2018-12-08 10:51:36 -0800 |
| commit | b93f4052fc171f456c8f594d4ae4aeb02ec5b3b6 (patch) | |
| tree | cfc74f0a6811da3329a928b007622ae5b10c111f | |
| parent | malloc: Add another test for tcache double free check. (diff) | |
| download | glibc-b93f4052fc171f456c8f594d4ae4aeb02ec5b3b6.tar.gz glibc-b93f4052fc171f456c8f594d4ae4aeb02ec5b3b6.tar.bz2 glibc-b93f4052fc171f456c8f594d4ae4aeb02ec5b3b6.zip | |
Fix potential stack overflow [BZ #23490]
Since we are expecting the exact "IBT" string, adjust stack buffer size
and scanf format accordingly.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86/tst-cet-property-2.c | 4 |
2 files changed, 8 insertions, 2 deletions
@@ -1,3 +1,9 @@ +2018-12-08 Paul Pluzhnikov <ppluzhnikov@google.com> + + [BZ #23490] + * sysdeps/unix/sysv/linux/x86/tst-cet-property-2.c + (do_test): Adjust buffer size and fix format. + 2018-12-07 DJ Delorie <dj@redhat.com> [BZ #23907] diff --git a/sysdeps/unix/sysv/linux/x86/tst-cet-property-2.c b/sysdeps/unix/sysv/linux/x86/tst-cet-property-2.c index 0531074ceb..259ef44eb8 100644 --- a/sysdeps/unix/sysv/linux/x86/tst-cet-property-2.c +++ b/sysdeps/unix/sysv/linux/x86/tst-cet-property-2.c @@ -44,9 +44,9 @@ sig_handler (int signo) static int do_test (void) { - char buf[20]; + char buf[4]; - if (scanf ("%20s", buf) != 1) + if (scanf ("%3s", buf) != 1) FAIL_UNSUPPORTED ("IBT not supported"); if (strcmp (buf, "IBT") != 0) |