Integer signedness error in the DCCP support in the do_dccp_getsockopt function in net/dccp/proto.c in Linux kernel 2.6.20 and later allows local users to read kernel memory or cause a denial of service (oops) via a negative optlen value.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | 2.6.20 (including) | 2.6.20 (including) |
| Linux_kernel | Linux | 2.6.20.1 (including) | 2.6.20.1 (including) |
| Linux_kernel | Linux | 2.6.20.2 (including) | 2.6.20.2 (including) |
| Linux-source-2.6.20 | Ubuntu | feisty | * |