DocumentationOverview
About vulnerability
In the Linux kernel, the following vulnerability has been resolved:
smb: client: validate DFS referral PathConsumed
parse_dfs_referrals() validates that the response contains the fixed referral entry array and, on for-next, the per-referral string offsets. However, the response also contains a PathConsumed value that is later used for DFS path parsing.
If a malformed response provides a PathConsumed value larger than the search name, later DFS parsing can advance beyond the end of the path.
Validate PathConsumed against the search name length before storing it in the parsed referral.
Details
- Affected product:
- AlmaLinux 9.2 ESU , Amazon Linux 2 ELS , CentOS 8.4 ELS , CentOS 8.5 ELS , CentOS Stream 8 ELS , Debian 10 ELS , Debian 11 ELS , Oracle Linux 7 ELS , TuxCare 9.6 ESU , TuxCare 9.8 ESU , Ubuntu 16.04 ELS , Ubuntu 18.04 ELS , Ubuntu 20.04 ELS
- Affected packages:
- linux @ 4.19.0 (+12 more)
Fixes
KernelCare state
Live-patch status from KernelCare for each operating system.
| Operating system | Status | Covered kernels |
|---|---|---|
| AlmaLinux 8 | Released |
130 kernels
|
| AlmaLinux 9 | Released |
126 kernels
|
| AlmaLinux 9.6 ESU | Planned | — |
| CentOS 8 | Released |
33 kernels
|
| CloudLinux OS 7h | Released |
119 kernels
|
| CloudLinux OS 8 | Released |
114 kernels
|
| Debian 12 | Released |
43 kernels
|
| Debian 13 | Released |
14 kernels
|
| Oracle Linux 8 | Released |
149 kernels
|
| Oracle Linux 9 | Released |
125 kernels
|
| RHEL 8 | Released |
146 kernels
|
| RHEL 9 | Released |
124 kernels
|
| Rocky Linux 8 | Released |
108 kernels
|
| Rocky Linux 9 | Released |
101 kernels
|
| Ubuntu 24.04 | Planned | — |
| Ubuntu 24.04 AWS | Planned | — |
| Ubuntu 26.04 | In Rollout |
2 kernels
|