16 lines
647 B
Diff
16 lines
647 B
Diff
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diff --git a/src/linux_sysfs.c b/src/linux_sysfs.c
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index 8c3cf67..ae9f38e 100644
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--- a/src/linux_sysfs.c
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+++ b/src/linux_sysfs.c
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@@ -338,6 +338,10 @@ pci_device_linux_sysfs_read_rom( struct pci_device * dev, void * buffer )
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if ( rom_size == 0 )
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rom_size = 0x10000;
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+ /* The caller has allocated dev->rom_size so cap the read amount. */
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+ if ( rom_size > dev->rom_size )
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+ rom_size = dev->rom_size;
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+
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/* This is a quirky thing on Linux. Even though the ROM and the file
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* for the ROM in sysfs are read-only, the string "1" must be written to
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* the file to enable the ROM. After the data has been read, "0" must be
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