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bump version to 5.15.19-3

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Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht 2022-03-07 18:23:21 +01:00
parent 78d3164c4f
commit 74eb34c8f9
3 changed files with 52 additions and 1 deletions
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2
Makefile
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@ -6,7 +6,7 @@ KERNEL_PATCHLEVEL=19
# rebuild packages with new KREL and run 'make abiupdate'
KREL=2
PKGREL=2
PKGREL=3
KERNEL_MAJMIN=$(KERNEL_MAJ).$(KERNEL_MIN)
KERNEL_VER=$(KERNEL_MAJMIN).$(KERNEL_PATCHLEVEL)

7
debian/changelog vendored
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@ -1,3 +1,10 @@
pve-kernel (5.15.19-3) bullseye; urgency=medium
* backport "lib/iov_iter: initialize "flags" in new pipe_buffer"
fixing CVE-2022-0847 "dirty pipe"
-- Proxmox Support Team <support@proxmox.com> Mon, 07 Mar 2022 16:23:02 +0100
pve-kernel (5.15.19-2) bullseye; urgency=medium
* backport fbdev memory region release improvements

44
patches/kernel/0014-lib-iov_iter-initialize-flags-in-new-pipe_buffer.patch Normal file
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@ -0,0 +1,44 @@
From 0000000000000000000000000000000000000000 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>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
---
lib/iov_iter.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index 9ffa7dc197be..fa5827e2e9a3 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -449,6 +449,7 @@ 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;
@@ -564,6 +565,7 @@ 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);