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| author | Alexander Shishkin <alexander.shishkin@linux.intel.com> | 2015-12-22 16:25:21 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-08 07:43:17 +0100 |
| commit | f08b18266c7116e2ec6885dd53a928f580060a71 (patch) | |
| tree | 90487bb127914a64084190520a3517f1d5137150 /drivers/hwtracing/intel_th | |
| parent | stm class: Fix an off-by-one in master array allocation (diff) | |
| download | linux-f08b18266c7116e2ec6885dd53a928f580060a71.tar.xz linux-f08b18266c7116e2ec6885dd53a928f580060a71.zip | |
stm class: Prevent user-controllable allocations
Currently, the character device write method allocates a temporary buffer
for user's data, but the user's data size is not sanitized and can cause
arbitrarily large allocations via kzalloc() or an integer overflow that
will then result in overwriting kernel memory.
This patch trims the input buffer size to avoid these issues.
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/intel_th')
0 files changed, 0 insertions, 0 deletions