A null pointer dereference flaw was found in sambas Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service.
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Samba | Samba | 3.6.0 (including) | 4.11.15 (excluding) |
| Samba | Samba | 4.12.0 (including) | 4.12.9 (excluding) |
| Samba | Samba | 4.13.0 (including) | 4.13.1 (excluding) |
| Red Hat Enterprise Linux 7 | RedHat | samba-0:4.10.16-9.el7_9 | * |
| Red Hat Enterprise Linux 8 | RedHat | openchange-0:2.3-27.el8 | * |
| Red Hat Enterprise Linux 8 | RedHat | samba-0:4.13.3-3.el8 | * |
| Red Hat Enterprise Linux 8 | RedHat | openchange-0:2.3-27.el8 | * |
| Red Hat Enterprise Linux 8 | RedHat | samba-0:4.13.3-3.el8 | * |
| Red Hat Gluster Storage 3.5 for RHEL 7 | RedHat | samba-0:4.11.6-112.el7rhgs | * |
| Red Hat Gluster Storage 3.5 for RHEL 8 | RedHat | samba-0:4.13.7-101.el8rhgs | * |
| Samba | Ubuntu | bionic | * |
| Samba | Ubuntu | devel | * |
| Samba | Ubuntu | focal | * |
| Samba | Ubuntu | groovy | * |
| Samba | Ubuntu | hirsute | * |
| Samba | Ubuntu | precise/esm | * |
| Samba | Ubuntu | trusty | * |
| Samba | Ubuntu | trusty/esm | * |
| Samba | Ubuntu | upstream | * |
| Samba | Ubuntu | xenial | * |