A ldb security update has been released for Debian GNU/Linux 9 LTS to address two issues.

DLA 2611-1: ldb security update

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Debian LTS Advisory DLA-2611-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Thorsten Alteholz
March 31, 2021   https://wiki.debian.org/LTS
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Package : ldb
Version : 2:1.1.27-1+deb9u2
CVE ID : CVE-2020-27840 CVE-2021-20277

Two issues have been found in ldb, an LDAP-like embedded database, for
example used with samba.

Both issues are related to out of bounds access, either an out of bound
read or a heap corrupton, both most likely leading to an application
crash.

For Debian 9 stretch, these problems have been fixed in version
2:1.1.27-1+deb9u2.

We recommend that you upgrade your ldb packages.

For the detailed security status of ldb please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/ldb

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS