Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-49975: Denial of service in HTTP/2 cookie request header counting CVE-2026-48913: Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67.
Fixed packages 3
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | mod_http2 | 0:2.0.42-1.amzn2023.0.1 |
| Amazon Linux · 2023 | mod_http2-debuginfo | 0:2.0.42-1.amzn2023.0.1 |
| Amazon Linux · 2023 | mod_http2-debugsource | 0:2.0.42-1.amzn2023.0.1 |
Vulnerabilities 2
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High 7.5
Apache HTTP Server: mod_http2 denial of service
Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP requests. This issue affects Apache HTTP Server: from 2.4.17 through 2.4.67.
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High 7.3
Apache HTTP Server: mod_http2 memory corruption when file handles exhausted
Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67.