U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2020-36791 Detail

Description

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().


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
https://blog.cdthoughts.ch/2021/03/16/syzbot-bug.html kernel.org
https://git.kernel.org/stable/c/0d1c3530e1bd38382edef72591b78e877e0edcd3 kernel.org
https://git.kernel.org/stable/c/557d015ffb27b672e24e6ad141fd887783871dc2 kernel.org
https://git.kernel.org/stable/c/9f8b6c44be178c2498a00b270872a6e30e7c8266 kernel.org
https://git.kernel.org/stable/c/bd3ee8fb6371b45c71c9345cc359b94da2ddefa9 kernel.org
https://git.kernel.org/stable/c/c4453d2833671e3a9f6bd52f0f581056c3736386 kernel.org
https://git.kernel.org/stable/c/d23faf32e577922b6da20bf3740625c1105381bf kernel.org
https://git.kernel.org/stable/c/d6cdc5bb19b595486fb2e6661e5138d73a57f454 kernel.org
https://syzkaller.appspot.com/bug?id=ea260693da894e7b078d18fca2c9c0a19b457534 kernel.org

Weakness Enumeration

CWE-ID CWE Name Source

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-36791
NVD Published Date:
05/07/2025
NVD Last Modified:
05/08/2025
Source:
kernel.org