RLSA-2026:36364

Synopsis

Important: nginx security, bug fix, and enhancement update

Description

nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage.

Security Fix(es):

* nginx: NGINX: Arbitrary code execution or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers (CVE-2026-42055)

Bug Fix(es) and Enhancement(s):

* "HTTP/2 bomb" nginx fix breaks module ABI causing crashes [rhel-10.2.z] (JIRA:Rocky Linux-191778)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Affected products

Rocky Linux 10 aarch64 Rocky Linux 10 ppc64le Rocky Linux 10 riscv64 Rocky Linux 10 s390x Rocky Linux 10 x86_64

Fixes

2489866

CVEs

CVE-2026-42055

Affected packages

Rocky Linux 10 aarch64 - AppStream

nginx-mod-http-perl-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-mod-http-image-filter-debuginfo-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-filesystem-2:1.26.3-6.el10_2.5.noarch.rpm nginx-mod-http-perl-debuginfo-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-mod-stream-debuginfo-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-debuginfo-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-debugsource-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-mod-mail-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-all-modules-2:1.26.3-6.el10_2.5.noarch.rpm nginx-core-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-mod-mail-debuginfo-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-mod-http-image-filter-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-mod-http-xslt-filter-debuginfo-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-2:1.26.3-6.el10_2.5.src.rpm nginx-mod-stream-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-mod-http-xslt-filter-2:1.26.3-6.el10_2.5.aarch64.rpm nginx-core-debuginfo-2:1.26.3-6.el10_2.5.aarch64.rpm

Rocky Linux 10 ppc64le - AppStream

nginx-mod-mail-debuginfo-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-filesystem-2:1.26.3-6.el10_2.5.noarch.rpm nginx-mod-http-perl-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-core-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-core-debuginfo-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-debuginfo-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-mod-http-perl-debuginfo-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-mod-http-xslt-filter-debuginfo-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-mod-stream-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-all-modules-2:1.26.3-6.el10_2.5.noarch.rpm nginx-mod-mail-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-mod-http-xslt-filter-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-mod-http-image-filter-debuginfo-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-mod-stream-debuginfo-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-2:1.26.3-6.el10_2.5.src.rpm nginx-mod-http-image-filter-2:1.26.3-6.el10_2.5.ppc64le.rpm nginx-debugsource-2:1.26.3-6.el10_2.5.ppc64le.rpm

Rocky Linux 10 s390x - AppStream

nginx-mod-http-perl-2:1.26.3-6.el10_2.5.s390x.rpm nginx-filesystem-2:1.26.3-6.el10_2.5.noarch.rpm nginx-mod-mail-debuginfo-2:1.26.3-6.el10_2.5.s390x.rpm nginx-mod-http-xslt-filter-2:1.26.3-6.el10_2.5.s390x.rpm nginx-mod-stream-debuginfo-2:1.26.3-6.el10_2.5.s390x.rpm nginx-mod-stream-2:1.26.3-6.el10_2.5.s390x.rpm nginx-mod-http-image-filter-2:1.26.3-6.el10_2.5.s390x.rpm nginx-mod-http-image-filter-debuginfo-2:1.26.3-6.el10_2.5.s390x.rpm nginx-all-modules-2:1.26.3-6.el10_2.5.noarch.rpm nginx-2:1.26.3-6.el10_2.5.s390x.rpm nginx-debuginfo-2:1.26.3-6.el10_2.5.s390x.rpm nginx-core-debuginfo-2:1.26.3-6.el10_2.5.s390x.rpm nginx-mod-http-xslt-filter-debuginfo-2:1.26.3-6.el10_2.5.s390x.rpm nginx-2:1.26.3-6.el10_2.5.src.rpm nginx-core-2:1.26.3-6.el10_2.5.s390x.rpm nginx-mod-http-perl-debuginfo-2:1.26.3-6.el10_2.5.s390x.rpm nginx-mod-mail-2:1.26.3-6.el10_2.5.s390x.rpm nginx-debugsource-2:1.26.3-6.el10_2.5.s390x.rpm

Rocky Linux 10 riscv64 - AppStream

nginx-filesystem-2:1.26.3-6.el10_2.5.noarch.rpm nginx-all-modules-2:1.26.3-6.el10_2.5.noarch.rpm nginx-2:1.26.3-6.el10_2.5.src.rpm

Rocky Linux 10 x86_64 - AppStream

nginx-filesystem-2:1.26.3-6.el10_2.5.noarch.rpm nginx-mod-http-perl-debuginfo-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-mod-mail-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-mod-http-xslt-filter-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-mod-http-perl-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-mod-mail-debuginfo-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-all-modules-2:1.26.3-6.el10_2.5.noarch.rpm nginx-debuginfo-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-debugsource-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-mod-http-image-filter-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-core-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-core-debuginfo-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-2:1.26.3-6.el10_2.5.src.rpm nginx-mod-stream-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-mod-http-image-filter-debuginfo-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-mod-http-xslt-filter-debuginfo-2:1.26.3-6.el10_2.5.x86_64.rpm nginx-mod-stream-debuginfo-2:1.26.3-6.el10_2.5.x86_64.rpm

Rocky Linux 10 aarch64 - CRB

nginx-mod-devel-2:1.26.3-6.el10_2.5.aarch64.rpm

Rocky Linux 10 ppc64le - CRB

nginx-mod-devel-2:1.26.3-6.el10_2.5.ppc64le.rpm

Rocky Linux 10 s390x - CRB

nginx-mod-devel-2:1.26.3-6.el10_2.5.s390x.rpm

Rocky Linux 10 x86_64 - CRB

nginx-mod-devel-2:1.26.3-6.el10_2.5.x86_64.rpm