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I am doing research on CVE-2017-16939 and trying to understand the exploit code for an assignment; however, I cannot find clear information on what sk_rmem_alloc represents.

Can someone point me in the direction of documentation that answers these questions?:

  • What does sk_rmem_alloc represent in reference to Netlink sockets?
  • How does it interact with sk_rcvbuf and netlink_skb_set_owner_r?

Link to exploit code: https://www.exploit-db.com/exploits/44049

Link to vulnerability: https://www.cvedetails.com/cve/CVE-2017-16939/

Katya
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  • [How do I ask and answer homework questions?](https://meta.stackoverflow.com/q/334822) It is okay to point you in the right direction but in this case it seems as if you're asking for us to answer the question entirely. – Orion the Constellation Nov 23 '20 at 02:42
  • I'm not asking to solve it entirely. I am trying to figure out the code overall and cannot figure out that one small piece of the code. Which appears to be completely within guidelines. @Monstarules – Katya Nov 23 '20 at 04:55
  • If someone could point me in the direction of documentation, that would be helpful. – Katya Nov 23 '20 at 04:59

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