vulnerability
Red Hat: CVE-2023-5215: libnbd: Crash or misbehaviour when NBD server returns an unexpected block size (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:A/AC:M/Au:N/C:N/I:N/A:C) | Sep 28, 2023 | May 1, 2024 | Aug 11, 2025 |
Severity
6
CVSS
(AV:A/AC:M/Au:N/C:N/I:N/A:C)
Published
Sep 28, 2023
Added
May 1, 2024
Modified
Aug 11, 2025
Description
A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unintended behavior for NBD clients that doesn't treat the return value of the nbd_get_size() function correctly.
Solutions
no-fix-redhat-rpm-packageredhat-upgrade-libnbdredhat-upgrade-libnbd-bash-completionredhat-upgrade-libnbd-debuginforedhat-upgrade-libnbd-debugsourceredhat-upgrade-libnbd-develredhat-upgrade-nbdfuseredhat-upgrade-nbdfuse-debuginforedhat-upgrade-ocaml-libnbdredhat-upgrade-ocaml-libnbd-debuginforedhat-upgrade-ocaml-libnbd-develredhat-upgrade-python3-libnbdredhat-upgrade-python3-libnbd-debuginfo
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