curl: backport Debian patch for CVE-2024-2398

import patch from ubuntu to fix
 CVE-2024-2398

Upstream-Status: Backport [import from ubuntu https://git.launchpad.net/ubuntu/+source/curl/tree/debian/patches/?h=ubuntu%2Ffocal-security
Upstream commit
https://github.com/curl/curl/commit/deca8039991886a559b67bcd6701db800a5cf764]

(From OE-Core rev: ce65f86c55ecf2c0e52564488e0237ba24429c45)

Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

2 files changed, 89 insertions, 0 deletions

diff --git a/meta/recipes-support/curl/curl/CVE-2024-2398.patch b/meta/recipes-support/curl/curl/CVE-2024-2398.patch
new file mode 100644
index 0000000000..a3840336f0
--- /dev/null
+++ b/meta/recipes-support/curl/curl/CVE-2024-2398.patch
@@ -0,0 +1,88 @@
+Backport of:
+
+From deca8039991886a559b67bcd6701db800a5cf764 Mon Sep 17 00:00:00 2001
+From: Stefan Eissing <stefan@eissing.org>
+Date: Wed, 6 Mar 2024 09:36:08 +0100
+Subject: [PATCH] http2: push headers better cleanup
+
+- provide common cleanup method for push headers
+
+Closes #13054
+
+Upstream-Status: Backport [import from ubuntu https://git.launchpad.net/ubuntu/+source/curl/tree/debian/patches/CVE-2024-2398.patch?h=ubuntu/focal-security
+Upstream commit https://github.com/curl/curl/commit/deca8039991886a559b67bcd6701db800a5cf764]
+CVE: CVE-2024-2398
+Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
+---
+ lib/http2.c | 34 +++++++++++++++-------------------
+ 1 file changed, 15 insertions(+), 19 deletions(-)
+
+--- a/lib/http2.c
++++ b/lib/http2.c
+@@ -515,6 +515,15 @@ static struct Curl_easy *duphandle(struc
+ }
+ 
+ 
++static void free_push_headers(struct HTTP *stream)
++{
++  size_t i;
++  for(i = 0; i<stream->push_headers_used; i++)
++    free(stream->push_headers[i]);
++  Curl_safefree(stream->push_headers);
++  stream->push_headers_used = 0;
++}
++
+ static int push_promise(struct Curl_easy *data,
+                         struct connectdata *conn,
+                         const nghttp2_push_promise *frame)
+@@ -528,7 +537,6 @@ static int push_promise(struct Curl_easy
+     struct curl_pushheaders heads;
+     CURLMcode rc;
+     struct http_conn *httpc;
+-    size_t i;
+     /* clone the parent */
+     struct Curl_easy *newhandle = duphandle(data);
+     if(!newhandle) {
+@@ -557,11 +565,7 @@ static int push_promise(struct Curl_easy
+     Curl_set_in_callback(data, false);
+ 
+     /* free the headers again */
+-    for(i = 0; i<stream->push_headers_used; i++)
+-      free(stream->push_headers[i]);
+-    free(stream->push_headers);
+-    stream->push_headers = NULL;
+-    stream->push_headers_used = 0;
++    free_push_headers(stream);
+ 
+     if(rv) {
+       /* denied, kill off the new handle again */
+@@ -995,10 +999,10 @@ static int on_header(nghttp2_session *se
+             stream->push_headers_alloc) {
+       char **headp;
+       stream->push_headers_alloc *= 2;
+-      headp = Curl_saferealloc(stream->push_headers,
+-                               stream->push_headers_alloc * sizeof(char *));
++      headp = realloc(stream->push_headers,
++                      stream->push_headers_alloc * sizeof(char *));
+       if(!headp) {
+-        stream->push_headers = NULL;
++        free_push_headers(stream);
+         return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE;
+       }
+       stream->push_headers = headp;
+@@ -1179,14 +1183,7 @@ void Curl_http2_done(struct Curl_easy *d
+   if(http->header_recvbuf) {
+     Curl_add_buffer_free(&http->header_recvbuf);
+     Curl_add_buffer_free(&http->trailer_recvbuf);
+-    if(http->push_headers) {
+-      /* if they weren't used and then freed before */
+-      for(; http->push_headers_used > 0; --http->push_headers_used) {
+-        free(http->push_headers[http->push_headers_used - 1]);
+-      }
+-      free(http->push_headers);
+-      http->push_headers = NULL;
+-    }
++    free_push_headers(http);
+   }
+ 
+   if(!httpc->h2) /* not HTTP/2 ? */
diff --git a/meta/recipes-support/curl/curl_7.69.1.bb b/meta/recipes-support/curl/curl_7.69.1.bb
index 980b4224a8..2f351d585a 100644
--- a/meta/recipes-support/curl/curl_7.69.1.bb
+++ b/meta/recipes-support/curl/curl_7.69.1.bb
@@ -58,6 +58,7 @@ SRC_URI = "https://curl.haxx.se/download/curl-${PV}.tar.bz2 \
            file://CVE-2023-28321.patch \
            file://CVE-2023-28322.patch \
            file://CVE-2023-46218.patch \
+           file://CVE-2024-2398.patch \
 "
 
 SRC_URI[md5sum] = "ec5fc263f898a3dfef08e805f1ecca42"