Rapid7

vulnerability

Debian: CVE-2023-5215: libnbd -- security update

Severity
6
CVSS
(AV:A/AC:M/Au:N/C:N/I:N/A:C)
Published
Sep 28, 2023
Added
May 15, 2025
Modified
Mar 30, 2026

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.

Solution

no-fix-debian-deb-package
Title
Rapid7 Labs

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