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| author | Ben Widawsky <ben.widawsky@intel.com> | 2021-02-20 19:58:46 -0800 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2021-02-22 14:44:39 -0800 |
| commit | 88ff5d466c0250259818f3153dbdc4af1f8615dd (patch) | |
| tree | 4ba72658fc8d8862b8b28188dc7d8ccf51e4c6d2 /virt/kvm | |
| parent | 58294927f468a428c7a1ba09cf986fdca14a2747 (diff) | |
| download | linux-88ff5d466c0250259818f3153dbdc4af1f8615dd.tar.bz2 | |
cxl/mem: Fix potential memory leak
When submitting a command for userspace, input and output payload bounce
buffers are allocated. For a given command, both input and output
buffers may exist and so when allocation of the input buffer fails, the
output buffer must be freed too.
As far as I can tell, userspace can't easily exploit the leak to OOM a
machine unless the machine was already near OOM state.
Fixes: 583fa5e71cae ("cxl/mem: Add basic IOCTL interface")
Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Link: https://lore.kernel.org/r/20210221035846.680145-1-ben.widawsky@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'virt/kvm')
0 files changed, 0 insertions, 0 deletions