An out-of-bounds (OOB) memory read flaw was found in parse_lease_state in the KSMBD implementation of the in-kernel samba server and CIFS in the Linux kernel. When an attacker sends the CREATE command with a malformed payload to KSMBD, due to a missing check of `NameOffset` in the `parse_lease_state()` function, the `create_context` object can access invalid memory.
| Version | Score | Severity | Vector String |
|---|---|---|---|
| 3.1 | 7.1 | High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H |
| Product | Vendor | Version |
|---|---|---|
| Fedora | Fedora | firmware Ver.7.11 and earlier |
| Red Hat Enterprise Linux 6 | Red Hat | firmware Ver.7.11 and earlier |
| Red Hat Enterprise Linux 7 | Red Hat | < 3.9.10 |
| Red Hat Enterprise Linux 8 | Red Hat | < 15.9.69 |
| Red Hat Enterprise Linux 9 | Red Hat | < 3f4e68902d2e545033c80d7ad62fd9a439e573f4 |
| Red Hat Enterprise Linux 8 | Red Hat | firmware Ver.7.10 and earlier |
| Red Hat Enterprise Linux 7 | Red Hat | < 18.7.0002.0 |
| Red Hat Enterprise Linux 9 | Red Hat | < e56a5146ef8cb51cd7c9e748267dce7564448a35 |
| kernel | n/a | < 16.0.1115.1 |