Sebastian Alba VivesandGreg Kroah-Hartman e45ec24d8e fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header() ...

commit 43a1974da6 upstream.

mpf_ops_parse_header() reads header_size from the bitstream at
MPF_HEADER_SIZE_OFFSET (24). When header_size is zero, the expression
*(buf + header_size - 1) reads one byte before the buffer start.

Since initial_header_size is set to 71 in mpf_ops, the fpga-mgr core
guarantees the buffer is large enough to reach MPF_HEADER_SIZE_OFFSET.
The only real gap is the zero header_size case, which cannot be
resolved by providing a larger buffer, so return -EINVAL.

Fixes: 5f8d4a9008 ("fpga: microchip-spi: add Microchip MPF FPGA manager")
Cc: stable@vger.kernel.org
Signed-off-by: Sebastian Alba Vives <sebasjosue84@gmail.com>
Reviewed-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20260518190742.61426-4-sebasjosue84@gmail.com
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2026-07-24 15:55:03 +02:00

..

altera-cvp.c

…

altera-fpga2sdram.c

…

altera-freeze-bridge.c

…

altera-hps2fpga.c

…

altera-pr-ip-core-plat.c

…

altera-pr-ip-core.c

…

altera-ps-spi.c

…

dfl-afu-dma-region.c

…

dfl-afu-error.c

…

dfl-afu-main.c

…

dfl-afu-region.c

…

dfl-afu.h

…

dfl-fme-br.c

…

dfl-fme-error.c

…

dfl-fme-main.c

…

dfl-fme-mgr.c

…

dfl-fme-perf.c

…

dfl-fme-pr.c

…

dfl-fme-pr.h

…

dfl-fme-region.c

…

dfl-fme.h

…

dfl-n3000-nios.c

…

dfl-pci.c

…

dfl.c

fpga: dfl: use subsys_initcall to allow built-in drivers to be added

2026-03-04 07:20:42 -05:00

dfl.h

…

fpga-bridge.c

…

fpga-mgr.c

…

fpga-region.c

…

ice40-spi.c

…

intel-m10-bmc-sec-update.c

…

Kconfig

…

machxo2-spi.c

…

Makefile

…

microchip-spi.c

fpga: microchip-spi: fix zero header_size OOB read in mpf_ops_parse_header()

2026-07-24 15:55:03 +02:00

of-fpga-region.c

fpga: region: fix use-after-free in child_regions_with_firmware()

2026-07-04 13:41:32 +02:00

socfpga-a10.c

…

socfpga.c

…

stratix10-soc.c

…

ts73xx-fpga.c

…

versal-fpga.c

…

xilinx-pr-decoupler.c

…

xilinx-spi.c

…

zynq-fpga.c

…

zynqmp-fpga.c

…