Security Advisory

CVE-2023-5215

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2023-09-28 13:55:32

Last updated 2025-11-08 08:55:24

Assigner redhat

State PUBLISHED

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 doesnt treat the return value of the nbd_get_size() function correctly.

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