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://gitlab.com/nbdkit/nbdkit/blob/master/SECURITY.md

  CVE-2019-14850 denial of service due to premature opening of back-end connection
See the full announcement and links to mitigation, tests and fixes here: https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/YR77GRSM2GE5W7XDXNHOPHTGCZEZ7RMP/

  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/message/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/GQ6HPFKEEDTHQLO764NLGXG7YCVIENGF/

  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/message/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/message/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/EQTMAKGDP53WYOUBCEKWLCWAJHVUNSXX/ 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 modification, 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.

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•   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.

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