Lukas Wunner 716f8b05cc cxl/pci: Handle excessive CDAT length ... commit 4fe2c13d59 upstream. If the length in the CDAT header is larger than the concatenation of the header and all table entries, then the CDAT exposed to user space contains trailing null bytes. Not every consumer may be able to handle that. Per Postel's robustness principle, "be liberal in what you accept" and silently reduce the cached length to avoid exposing those null bytes. Fixes: c97006046c ("cxl/port: Read CDAT table") Tested-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: stable@vger.kernel.org # v6.0+ Link: https://lore.kernel.org/r/6d98b3c7da5343172bd3ccabfabbc1f31c079d74.1678543498.git.lukas@wunner.de Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-04-13 17:02:42 +02:00
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core	cxl/pci: Handle excessive CDAT length	2023-04-13 17:02:42 +02:00
acpi.c	cxl/pmem: Fix nvdimm unregistration when cxl_pmem driver is absent	2023-01-25 15:35:26 -08:00
cxl.h	cxl: update names for interleave ways conversion macros	2022-12-05 18:17:16 -08:00
cxlmem.h	cxl/mbox: Add variable output size validation for internal commands	2022-12-06 14:36:02 -08:00
cxlpci.h	cxl/pci: Handle truncated CDAT entries	2023-04-13 17:02:42 +02:00
Kconfig	cxl/region: Manage CPU caches relative to DPA invalidation events	2022-12-03 00:03:57 -08:00
Makefile	cxl/pmem: Introduce nvdimm_security_ops with ->get_flags() operation	2022-11-30 16:30:47 -08:00
mem.c	cxl/port: Add RCD endpoint port enumeration	2022-12-05 10:32:26 -08:00
pci.c	cxl: fix cxl_report_and_clear() RAS UE addr mis-assignment	2023-01-09 12:55:54 -08:00
pmem.c	cxl/pmem: Fix nvdimm registration races	2023-03-10 09:29:42 +01:00
port.c	cxl/port: Read CDAT table	2022-07-19 15:38:05 -07:00
security.c	cxl/mbox: Enable cxl_mbox_send_cmd() users to validate output size	2022-12-06 14:36:02 -08:00