diff options
| author | Peilin Ye <[email protected]> | 2020-07-30 19:20:26 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2020-07-31 23:52:48 +0000 |
| commit | bbc8a99e952226c585ac17477a85ef1194501762 (patch) | |
| tree | 6e62fbfef1f8f51b488c3be4af8599b48f2cfefc /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | Merge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher... (diff) | |
| download | kernel-bbc8a99e952226c585ac17477a85ef1194501762.tar.gz kernel-bbc8a99e952226c585ac17477a85ef1194501762.zip | |
rds: Prevent kernel-infoleak in rds_notify_queue_get()
rds_notify_queue_get() is potentially copying uninitialized kernel stack
memory to userspace since the compiler may leave a 4-byte hole at the end
of `cmsg`.
In 2016 we tried to fix this issue by doing `= { 0 };` on `cmsg`, which
unfortunately does not always initialize that 4-byte hole. Fix it by using
memset() instead.
Cc: [email protected]
Fixes: f037590fff30 ("rds: fix a leak of kernel memory")
Fixes: bdbe6fbc6a2f ("RDS: recv.c")
Suggested-by: Dan Carpenter <[email protected]>
Signed-off-by: Peilin Ye <[email protected]>
Acked-by: Santosh Shilimkar <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
0 files changed, 0 insertions, 0 deletions