Description
The ptrace_setxregs function in arch/xtensa/kernel/ptrace.c in the Linux kernel before 3.1 does not validate user-space pointers, which allows local users to obtain sensitive information from kernel memory locations via a crafted PTRACE_SETXTREGS request.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0d0138ebe24b94065580bd2601f8bb7eb6152f56
- [oss-security] 20110720 Re: CVE request: kernel: arbitrary kernel read in xtensa mailing-list
- https://github.com/torvalds/linux/commit/0d0138ebe24b94065580bd2601f8bb7eb6152f56
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1