libnbd-security - Man Page

information about past security issues in libnbd


This page details past security issues found in libnbd.

For how to report new security issues, see the SECURITY file in the top level source directory, also available online here:

CVE-2019-14842 protocol downgrade attack when using LIBNBD_TLS_REQUIRE

See the full announcement and links to mitigation, tests and fixes here:

remote code execution vulnerability

See the full announcement here:

CVE-2021-20286 denial of service when using nbd_set_opt_mode(3)

See the full announcement here:

CVE-2022-0485 silent data corruption when using nbdcopy(1)

See the full announcement here:

integration testing denial of service with block status

See the full announcement here:

CVE-2023-5215 negative size result from nbd_get_size(3)

See the full announcement here:

CVE-2023-5871 assertion failure for 64-bit flags passed to nbd_block_status(3)

See the full announcement here:

See Also



Eric Blake

Richard W.M. Jones


This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Referenced By

libnbd(3), libnbd-release-notes-1.10(1), libnbd-release-notes-1.12(1), libnbd-release-notes-1.14(1), libnbd-release-notes-1.16(1), libnbd-release-notes-1.18(1), libnbd-release-notes-1.2(1), libnbd-release-notes-1.4(1), libnbd-release-notes-1.6(1), libnbd-release-notes-1.8(1), NBD(3), nbd_set_pread_initialize(3), nbdsh(1).

2024-02-17 libnbd-1.19.7