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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2016-09-10 16:31:04 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-09-15 19:51:55 -0400 |
| commit | 7798bf2140ebcc36eafec6a4194fffd8d585d471 (patch) | |
| tree | f3babde13b19f0f95ba1f27d5af1569404722444 /arch/arm/lib | |
| parent | alpha: get rid of tail-zeroing in __copy_user() (diff) | |
| download | wireguard-linux-7798bf2140ebcc36eafec6a4194fffd8d585d471.tar.xz wireguard-linux-7798bf2140ebcc36eafec6a4194fffd8d585d471.zip | |
arc: don't leak bits of kernel stack into coredump
On faulting sigreturn we do get SIGSEGV, all right, but anything
we'd put into pt_regs could end up in the coredump. And since
__copy_from_user() never zeroed on arc, we'd better bugger off
on its failure without copying random uninitialized bits of
kernel stack into pt_regs...
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/arm/lib')
0 files changed, 0 insertions, 0 deletions