Add kernelCTF CVE-2023-3776 (lts) #50
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koczkatamas
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| first->cmsg_type = 0x41414141; | ||
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| for(int i=0x40;i<0x80;i+=0x8) | ||
| *(size_t*)&payload[i] = 0xfffffe000003df58; //cpu_entry_area fixed kernel address |
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Can you comment on which field is at offset 0x3df58? https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/include/asm/cpu_entry_area.h#n90
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That address is at CPU#1 cpu_entry_area's entry_stack_page (stack address) while it try to push r15 in function error_entry
Add cooment on why to poweroff
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Hi, thanks for the comment. |
koczkatamas
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Nov 13, 2023
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