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.
Metrics
CVSS 3.1 6.5/10
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | — |
| Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | — |
References
- https://access.redhat.com/errata/RHSA-2024:2204
- https://access.redhat.com/security/cve/CVE-2023-5215Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2241041Issue Tracking, Vendor Advisory
- https://listman.redhat.com/archives/libguestfs/2023-September/032635.htmlExploit, Patch
- https://access.redhat.com/errata/RHSA-2024:2204
- https://access.redhat.com/security/cve/CVE-2023-5215Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2241041Issue Tracking, Vendor Advisory
- https://listman.redhat.com/archives/libguestfs/2023-September/032635.htmlExploit, Patch
Timeline
- Published
- Sep 28, 2023
- Last modified
- Jun 17, 2026
- NVD status
- Modified