CVE-2021-3743 Information disclosure in Kernel

What is CVE-2021-3743?

CVE-2021-3743 is a high-severity vulnerability in Fedoraproject Fedora, published on 4 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel. A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability.

Weakness: CWE-125

Which versions are affected by CVE-2021-3743?

It affects 13 products.

Products include Fedoraproject Fedora, Linux kernel, Netapp H300e Firmware, Netapp H300s Firmware, Netapp H410c Firmware, Netapp H410s Firmware and 7 more.

How do I fix CVE-2021-3743?

Apply the vendor's patch.

Is CVE-2021-3743 being exploited?

There is no known exploitation of CVE-2021-3743 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as A-224080927, AZL-8921, DEBIAN-CVE-2021-3743, GHSA-5g47-45xh-p83v, PUB-A-224080927, UBUNTU-CVE-2021-3743.