Re: [Qemu-devel] [PATCH] multiboot: check mh_load_end_addr address field

[P J P]

+-- On Wed, 28 Feb 2018, P J P wrote --+
| While loading kernel via multiboot-v1 image, (flags & 0x00010000)
| indicates that multiboot header contains valid addresses to load
| the kernel image. In that, end of the data segment address
| 'mh_load_end_addr' should be less than the bss segment address
| 'mh_bss_end_addr'. Add check to validate that.
| 
| +        if (mh_load_end_addr > mh_bss_end_addr) {
| +            fprintf(stderr, "invalid mh_load_end_addr address\n");
| +            exit(1);
| +        }
|  

Ping...!
--
Prasad J Pandit / Red Hat Product Security Team
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