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| author | Jann Horn <jannh@google.com> | 2018-07-07 00:50:03 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-07-07 19:58:41 +0300 |
| commit | 15279df6f26cf2013d713904b4a0c957ae8abb96 (patch) | |
| tree | ab9a3489acdac58d266366cb4539db6a8ca269e7 /arch/x86/kernel/process_64.c | |
| parent | 1268ed0c474a5c8f165ef386f3310521b5e00e27 (diff) | |
| download | linux-15279df6f26cf2013d713904b4a0c957ae8abb96.tar.xz | |
x86/mtrr: Don't copy out-of-bounds data in mtrr_write
Don't access the provided buffer out of bounds - this can cause a kernel
out-of-bounds read when invoked through sys_splice() or other things that
use kernel_write()/__kernel_write().
Fixes: 7f8ec5a4f01a ("x86/mtrr: Convert to use strncpy_from_user() helper")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180706215003.156702-1-jannh@google.com
Diffstat (limited to 'arch/x86/kernel/process_64.c')
0 files changed, 0 insertions, 0 deletions