endif
cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/linux/linux-3.14.79-amba-fix.patch
+ # Fix for CVE-2022-0847 aka Dirty Pipe
+ cd $(DIR_APP) && patch -Np1 < $(DIR_SRC)/src/patches/kernel-5.15-CVE-2022-0847.patch
+
ifeq "$(KCFG)" "-headers"
# Install the header files
cd $(DIR_APP) && make ARCH=$(HEADERS_ARCH) $(EXTRAMAKE) headers
--- /dev/null
+From 114e9f141822e6977633d322c1b03e89bd209932 Mon Sep 17 00:00:00 2001
+From: Max Kellermann <max.kellermann@ionos.com>
+Date: Mon, 21 Feb 2022 11:03:13 +0100
+Subject: [PATCH] lib/iov_iter: initialize "flags" in new pipe_buffer
+
+commit 9d2231c5d74e13b2a0546fee6737ee4446017903 upstream.
+
+The functions copy_page_to_iter_pipe() and push_pipe() can both
+allocate a new pipe_buffer, but the "flags" member initializer is
+missing.
+
+Fixes: 241699cd72a8 ("new iov_iter flavour: pipe-backed")
+To: Alexander Viro <viro@zeniv.linux.org.uk>
+To: linux-fsdevel@vger.kernel.org
+To: linux-kernel@vger.kernel.org
+Cc: stable@vger.kernel.org
+Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
+Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ lib/iov_iter.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/lib/iov_iter.c b/lib/iov_iter.c
+index 60b5e6edfbaa..c5b2f0f4b8a8 100644
+--- a/lib/iov_iter.c
++++ b/lib/iov_iter.c
+@@ -416,6 +416,7 @@ static size_t copy_page_to_iter_pipe(struct page *page, size_t offset, size_t by
+ return 0;
+
+ buf->ops = &page_cache_pipe_buf_ops;
++ buf->flags = 0;
+ get_page(page);
+ buf->page = page;
+ buf->offset = offset;
+@@ -532,6 +533,7 @@ static size_t push_pipe(struct iov_iter *i, size_t size,
+ break;
+
+ buf->ops = &default_pipe_buf_ops;
++ buf->flags = 0;
+ buf->page = page;
+ buf->offset = 0;
+ buf->len = min_t(ssize_t, left, PAGE_SIZE);
+--
+2.30.2
+