app-shells/bash: fix CVE-2019-9924.

BUG=b/269241909
TEST=presubmit
RELEASE_NOTE=Fixed CVE-2019-9924.

cos-patch: security-high
Change-Id: I28fb2bf4f1e742ebddac96b828f6038ef0bb3079
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/portage-stable/+/43890
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Meena Shanmugam <meenashanmugam@google.com>
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
3 files changed