CVE-2024-34161: fedora Use-After-Free — Fix

Description

When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module and the network infrastructure supports a Maximum Transmission Unit (MTU) of 4096 or greater without fragmentation, undisclosed QUIC packets can cause NGINX worker processes to leak previously freed memory.

Is your site exposed to CVE-2024-34161?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-416 Use After Free

Affected Products

Vendor	Product	Versions
f5	nginx_open_source	1.25.0 — 1.26.1
f5	nginx_plus	All
f5	nginx_plus	All
f5	nginx_plus	All
f5	nginx_plus	All
f5	nginx_plus	All
fedoraproject	fedora	All
fedoraproject	fedora	All

References

Advisories & Patches

https://my.f5.com/manage/s/article/K000139627 https://my.f5.com/manage/s/article/K000139627

Other References

http://www.openwall.com/lists/oss-security/2024/05/30/4 https://lists.fedoraproject.org/archives/list/[email protected]/message/MLAOKJWDALQZBIV3WKGPJ6T5Z56D3PRD/ https://lists.fedoraproject.org/archives/list/[email protected]/message/R7RPLWC35WHEUFCGKNFG62ESNID25TEZ/ http://www.openwall.com/lists/oss-security/2024/05/30/4 https://lists.fedoraproject.org/archives/list/[email protected]/message/MLAOKJWDALQZBIV3WKGPJ6T5Z56D3PRD/ https://lists.fedoraproject.org/archives/list/[email protected]/message/R7RPLWC35WHEUFCGKNFG62ESNID25TEZ/

Frequently Asked Questions

What is CVE-2024-34161? +

When NGINX Plus or NGINX OSS are configured to use the HTTP/3 QUIC module and the network infrastructure supports a Maximum Transmission Unit (MTU) of 4096 or greater without fragmentation, undisclosed QUIC packets can cause NGINX worker processes to leak previously freed memory. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2024-34161? +

CVE-2024-34161 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-34161? +

CVE-2024-34161 affects products from f5, fedoraproject, specifically: fedora, nginx_open_source, nginx_plus. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-34161? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-55406

Buffa is a pure-Rust Protocol Buffers implementation with first-class protobuf editions support. Prior to 0.7.0, a soundness bug in the …

CVE-2026-6040

A heap use-after-free existed when importing the blank-width characters of an ODF number format. A position value read from the …

CVE-2025-24898

rust-openssl is a set of OpenSSL bindings for the Rust programming language. In affected versions `ssl::select_next_proto` can return a slice …

CVE-2025-31115

XZ Utils provide a general-purpose data-compression library plus command-line tools. In XZ Utils 5.3.3alpha to 5.8.0, the multithreaded .xz decoder …

CVE-2025-31498

c-ares is an asynchronous resolver library. From 1.32.3 through 1.34.4, there is a use-after-free in read_answers() when process_answer() may re-enqueue …

CVE-2025-4516

There is an issue in CPython when using `bytes.decode("unicode_escape", error="ignore|replace")`. If you are not using the "unicode_escape" encoding or an …

CVE-2024-34161