The mq_open system call in Linux kernel 2.6.9, in certain situations, can decrement a counter twice (double decrement) as a result of multiple calls to the mntput function when the dentry_open function call fails, which allows local users to cause a denial of service (panic) via unspecified attack vectors.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Linux_kernel | Linux | 2.6.9-2.6.20 (including) | 2.6.9-2.6.20 (including) |
| Red Hat Enterprise Linux 4 | RedHat | kernel-0:2.6.9-22.0.2.EL | * |
| Linux-source-2.6.15 | Ubuntu | dapper | * |
| Linux-source-2.6.17 | Ubuntu | edgy | * |