From: Peter Marko <[email protected]> Pick patch accorting to [1].
[1] https://security-tracker.debian.org/tracker/CVE-2026-1642 Signed-off-by: Peter Marko <[email protected]> --- .../nginx/files/CVE-2026-1642.patch | 42 +++++++++++++++++++ .../recipes-httpd/nginx/nginx_1.24.0.bb | 1 + 2 files changed, 43 insertions(+) create mode 100644 meta-webserver/recipes-httpd/nginx/files/CVE-2026-1642.patch diff --git a/meta-webserver/recipes-httpd/nginx/files/CVE-2026-1642.patch b/meta-webserver/recipes-httpd/nginx/files/CVE-2026-1642.patch new file mode 100644 index 0000000000..17dc25b3ad --- /dev/null +++ b/meta-webserver/recipes-httpd/nginx/files/CVE-2026-1642.patch @@ -0,0 +1,42 @@ +From 784fa05025cb8cd0c770f99bc79d2794b9f85b6e Mon Sep 17 00:00:00 2001 +From: Roman Arutyunyan <[email protected]> +Date: Thu, 29 Jan 2026 13:27:32 +0400 +Subject: [PATCH] Upstream: detect premature plain text response from SSL + backend. + +When connecting to a backend, the connection write event is triggered +first in most cases. However if a response arrives quickly enough, both +read and write events can be triggered together within the same event loop +iteration. In this case the read event handler is called first and the +write event handler is called after it. + +SSL initialization for backend connections happens only in the write event +handler since SSL handshake starts with sending Client Hello. Previously, +if a backend sent a quick plain text response, it could be parsed by the +read event handler prior to starting SSL handshake on the connection. +The change adds protection against parsing such responses on SSL-enabled +connections. +--- + src/http/ngx_http_upstream.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c +index df577ad67..cadc74479 100644 +--- a/src/http/ngx_http_upstream.c ++++ b/src/http/ngx_http_upstream.c +@@ -2441,6 +2441,15 @@ ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u) + return; + } + ++#if (NGX_HTTP_SSL) ++ if (u->ssl && c->ssl == NULL) { ++ ngx_log_error(NGX_LOG_ERR, c->log, 0, ++ "upstream prematurely sent response"); ++ ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR); ++ return; ++ } ++#endif ++ + u->state->bytes_received += n; + + u->buffer.last += n; diff --git a/meta-webserver/recipes-httpd/nginx/nginx_1.24.0.bb b/meta-webserver/recipes-httpd/nginx/nginx_1.24.0.bb index e288b19da3..93a27ebd56 100644 --- a/meta-webserver/recipes-httpd/nginx/nginx_1.24.0.bb +++ b/meta-webserver/recipes-httpd/nginx/nginx_1.24.0.bb @@ -3,6 +3,7 @@ require nginx.inc LIC_FILES_CHKSUM = "file://LICENSE;md5=175abb631c799f54573dc481454c8632" SRC_URI:append = " file://CVE-2025-23419.patch" +SRC_URI:append = " file://CVE-2026-1642.patch" SRC_URI[sha256sum] = "77a2541637b92a621e3ee76776c8b7b40cf6d707e69ba53a940283e30ff2f55d"
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