The exit_thread function (process.c) in Linux kernel 2.6 through 2.6.5 does not invalidate the per-TSS io_bitmap pointers if a process obtains IO access permissions from the ioperm function but does not drop those permissions when it exits, which allows other processes to access the per-TSS pointers, access restricted memory locations, and possibly gain privileges.
Name | Vendor | Start Version | End Version |
---|---|---|---|
Linux_kernel | Linux | 2.6.0 (including) | 2.6.0 (including) |
Linux_kernel | Linux | 2.6.1 (including) | 2.6.1 (including) |
Linux_kernel | Linux | 2.6.1-rc1 (including) | 2.6.1-rc1 (including) |
Linux_kernel | Linux | 2.6.1-rc2 (including) | 2.6.1-rc2 (including) |
Linux_kernel | Linux | 2.6.2 (including) | 2.6.2 (including) |
Linux_kernel | Linux | 2.6.3 (including) | 2.6.3 (including) |
Linux_kernel | Linux | 2.6.4 (including) | 2.6.4 (including) |
Linux_kernel | Linux | 2.6.5 (including) | 2.6.5 (including) |