Vulnerabilities > CVE-2023-5215 - Unchecked Return Value vulnerability in Redhat Enterprise Linux and Libnbd
Attack vector
ADJACENT_NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
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.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://access.redhat.com/errata/RHSA-2024:2204
- https://access.redhat.com/errata/RHSA-2024:2204
- https://access.redhat.com/security/cve/CVE-2023-5215
- https://access.redhat.com/security/cve/CVE-2023-5215
- https://bugzilla.redhat.com/show_bug.cgi?id=2241041
- https://bugzilla.redhat.com/show_bug.cgi?id=2241041
- https://listman.redhat.com/archives/libguestfs/2023-September/032635.html
- https://listman.redhat.com/archives/libguestfs/2023-September/032635.html