Upstream information
Description
The cookie feature in the packet action API implementation in net/sched/act_api.c in the Linux kernel 4.11.x through 4.11-rc7 mishandles the tb nlattr array, which allows local users to cause a denial of service (uninitialized memory access and refcount underflow, and system hang or crash) or possibly have unspecified other impact via "tc filter add" commands in certain contexts. NOTE: this does not affect stable kernels, such as 4.10.x, from kernel.org.SUSE information
Overall state of this security issue: Does not affect SUSE products
This issue is currently rated as having moderate severity.
| National Vulnerability Database | SUSE | |
|---|---|---|
| Base Score | 7.2 | 4.4 |
| Vector | AV:L/AC:L/Au:N/C:C/I:C/A:C | AV:L/AC:M/Au:N/C:P/I:P/A:P |
| Access Vector | Local | Local |
| Access Complexity | Low | Medium |
| Authentication | None | None |
| Confidentiality Impact | Complete | Partial |
| Integrity Impact | Complete | Partial |
| Availability Impact | Complete | Partial |
| National Vulnerability Database | |
|---|---|
| Base Score | 7.8 |
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Access Vector | Local |
| Access Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | High |
| Integrity Impact | High |
| Availability Impact | High |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.
| Product(s) | Source package | State |
|---|---|---|
| SUSE Linux Enterprise Desktop 12 SP1 | kernel-source | Not affected |
| SUSE Linux Enterprise Desktop 12 SP2 | kernel-source | Not affected |
| SUSE Linux Enterprise Desktop 12 SP3 | kernel-source | Analysis |
| SUSE Linux Enterprise Desktop 12 SP4 | kernel-source | Analysis |
| SUSE Linux Enterprise High Performance Computing 12 | kernel-source | Analysis |
| SUSE Linux Enterprise Module for Basesystem 15 GA | kernel-source | Analysis |
| SUSE Linux Enterprise Module for Development Tools 15 GA | kernel-source | Analysis |
| SUSE Linux Enterprise Server 11 SP3 LTSS | kernel-source | Analysis |
| SUSE Linux Enterprise Server 11 SP4 | kernel-source | Analysis |
| SUSE Linux Enterprise Server 12 GA LTSS | kernel-source | Analysis |
| SUSE Linux Enterprise Server 12 SP1 | kernel-source | Not affected |
| SUSE Linux Enterprise Server 12 SP2 | kernel-source | Not affected |
| SUSE Linux Enterprise Server 12 SP2 LTSS | kernel-source | Analysis |
| SUSE Linux Enterprise Server 12 SP3 | kernel-source | Analysis |
| SUSE Linux Enterprise Server 12 SP4 | kernel-source | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 11 SP3 | kernel-source | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 12 GA | kernel-source | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 12 SP2 | kernel-source | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 12 SP4 | kernel-source | Analysis |
