CVE-2023-5215 Information

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.

Reference

https://access.redhat.com/security/cve/CVE-2023-5215 https://bugzilla.redhat.com/show_bug.cgi?id=2241041 https://listman.redhat.com/archives/libguestfs/2023-September/032635.html