CVE-2021-47017 Information

Description

In the Linux kernel the following vulnerability has been resolved:

ath10k: Fix a use after free in ath10k_htc_send_bundle

In ath10k_htc_send_bundle the bundle_skb could be freed by dev_kfree_skb_any(bundle_skb). But the bundle_skb is used later by bundle_skb->len.

As skb_len = bundle_skb->len my patch replaces bundle_skb->len to skb_len after the bundle_skb was freed.

Reference

https://git.kernel.org/stable/c/8bb054fb336f4250002fff4e0b075221c05c3c65 https://git.kernel.org/stable/c/3b1ac40c6012140828caa79e592a438a18ebf71b https://git.kernel.org/stable/c/5e413c0831ff4700d1739db3fa3ae9f859744676 https://git.kernel.org/stable/c/8392df5d7e0b6a7d21440da1fc259f9938f4dec3