CVE-2020-36791

In the Linux kernel, the following vulnerability has been resolved: net_sched: keep alloc_hash updated after hash allocation In commit 599be01ee567 ("net_sched: fix an OOB access in cls_tcindex") I moved cp->hash calculation before the first tcindex_alloc_perfect_hash(), but cp->alloc_hash is left untouched. This difference could lead to another out of bound access. cp->alloc_hash should always be the size allocated, we should update it after this tcindex_alloc_perfect_hash().

The following products are affected by CVE-2020-36791 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2020-36791.

URL	Resource
https://blog.cdthoughts.ch/2021/03/16/syzbot-bug.html
https://git.kernel.org/stable/c/0d1c3530e1bd38382edef72591b78e877e0edcd3
https://git.kernel.org/stable/c/557d015ffb27b672e24e6ad141fd887783871dc2
https://git.kernel.org/stable/c/9f8b6c44be178c2498a00b270872a6e30e7c8266
https://git.kernel.org/stable/c/bd3ee8fb6371b45c71c9345cc359b94da2ddefa9
https://git.kernel.org/stable/c/c4453d2833671e3a9f6bd52f0f581056c3736386
https://git.kernel.org/stable/c/d23faf32e577922b6da20bf3740625c1105381bf
https://git.kernel.org/stable/c/d6cdc5bb19b595486fb2e6661e5138d73a57f454
https://lore.kernel.org/linux-cve-announce/2025050736-CVE-2020-36791-4c86@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2020-36791
https://syzkaller.appspot.com/bug?id=ea260693da894e7b078d18fca2c9c0a19b457534
https://www.cve.org/CVERecord?id=CVE-2020-36791