CVE-2021-38604 Null dereference in n/a

What is CVE-2021-38604?

CVE-2021-38604 is a high-severity vulnerability in Fedoraproject Fedora, published on 12 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In librt in the GNU C Library (aka glibc) through 2.34, sysdeps/unix/sysv/linux/mq_notify.c mishandles certain NOTIFY_REMOVED data, leading to a NULL pointer dereference. NOTE: this vulnerability was introduced as a side effect of the CVE-2021-33574 fix.

Weakness: CWE-476

Which versions are affected by CVE-2021-38604?

It affects 8 products.

Products include Fedoraproject Fedora, Gnu Glibc, Oracle Communications Cloud Native Core Binding Support Function, Oracle Communications Cloud Native Core Network Function Cloud Native Environment, Oracle Communications Cloud Native Core Network Repository Function, Oracle Communications Cloud Native Core Security Edge Protection Proxy and 2 more.

How do I fix CVE-2021-38604?

Apply the vendor's patch.

Is CVE-2021-38604 being exploited?

There is no known exploitation of CVE-2021-38604 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 AZL-6442, GHSA-p3v7-wjmc-7fh8, MGASA-2021-0404, MINI-2x36-mg47-wp3p, OESA-2021-1328.