CVSS 3.1
7.1 highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:HCVE-2020-36791
High (7.1) in linux linux kernel. EPSS 0.2% chance of exploitation in the next 30 days.
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().
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-31)
- CWE
- CWE-125
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linux:linux_kernel
References
- 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