nbdkit-security(1) NBDKIT nbdkit-security(1) NAME nbdkit-security - information about past security issues in nbdkit DESCRIPTION This page details past security issues found in nbdkit. For how to report new security issues, see the "SECURITY.md" file in the top level source directory, also available online here: https://git- lab.com/nbdkit/nbdkit/blob/master/SECURITY.md CVE-2019-14850 denial of service due to premature opening of back-end connec- tion See the full announcement and links to mitigation, tests and fixes here: https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/YR77GRSM2GE5W7XDXN- HOPHTGCZEZ7RMP/ CVE-2019-14851 assertion failure by issuing commands in the wrong order This CVE was caused by the fix to the previous issue. See the full announcement and links to mitigation, tests and fixes here: https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/mes- sage/KZMJDBRRPPVOQSD5EK6NDTXSKK6J7AYX/ CVE-2021-3716 structured read denial of service attack against starttls See the full announcement and links to mitigation, tests and fixes here: https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/GQ6HPF- KEEDTHQLO764NLGXG7YCVIENGF/ CVE-2025-47711 denial of service attack by client sending maximum size block status See the full announcement and links to mitigation, tests and fixes here: https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/mes- sage/67E7AASHHADIY7VAD3FFW2I67LTWVWYF/ CVE-2025-47712 denial of service attack by client sending large unaligned size block status See the full announcement and links to mitigation, tests and fixes here: https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/mes- sage/67E7AASHHADIY7VAD3FFW2I67LTWVWYF/ denial of service attack by client sending unaligned block status See the patch here: https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/EQT- MAKGDP53WYOUBCEKWLCWAJHVUNSXX/ Full announcement and links to mitigation coming. SEE ALSO nbdkit(1). AUTHORS Eric Blake Richard W.M. Jones COPYRIGHT Copyright Red Hat LICENSE Redistribution and use in source and binary forms, with or without modifi- cation, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright no- tice, this list of conditions and the following disclaimer in the docu- mentation and/or other materials provided with the distribution. * Neither the name of Red Hat nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND ANY EX- PRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DIS- CLAIMED. IN NO EVENT SHALL RED HAT OR CONTRIBUTORS BE LIABLE FOR ANY DI- RECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SER- VICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABIL- ITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAM- AGE. nbdkit-1.46.2 2026-08-30 nbdkit-security(1)
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