Patch "net: Fix from address in memcpy_to_iter_csum()" has been added to the 6.7-stable tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



This is a note to let you know that I've just added the patch titled

    net: Fix from address in memcpy_to_iter_csum()

to the 6.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-fix-from-address-in-memcpy_to_iter_csum.patch
and it can be found in the queue-6.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From fe92f874f09145a6951deacaa4961390238bbe0d Mon Sep 17 00:00:00 2001
From: Michael Lass <bevan@xxxxxxxxx>
Date: Wed, 31 Jan 2024 16:52:20 +0100
Subject: net: Fix from address in memcpy_to_iter_csum()

From: Michael Lass <bevan@xxxxxxxxx>

commit fe92f874f09145a6951deacaa4961390238bbe0d upstream.

While inlining csum_and_memcpy() into memcpy_to_iter_csum(), the from
address passed to csum_partial_copy_nocheck() was accidentally changed.
This causes a regression in applications using UDP, as for example
OpenAFS, causing loss of datagrams.

Fixes: dc32bff195b4 ("iov_iter, net: Fold in csum_and_memcpy()")
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Cc: regressions@xxxxxxxxxxxxxxx
Signed-off-by: Michael Lass <bevan@xxxxxxxxx>
Reviewed-by: Jeffrey Altman <jaltman@xxxxxxxxxxxx>
Acked-by: David Howells <dhowells@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/core/datagram.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -751,7 +751,7 @@ size_t memcpy_to_iter_csum(void *iter_to
 			   size_t len, void *from, void *priv2)
 {
 	__wsum *csum = priv2;
-	__wsum next = csum_partial_copy_nocheck(from, iter_to, len);
+	__wsum next = csum_partial_copy_nocheck(from + progress, iter_to, len);
 
 	*csum = csum_block_add(*csum, next, progress);
 	return 0;


Patches currently in stable-queue which might be from bevan@xxxxxxxxx are

queue-6.7/net-fix-from-address-in-memcpy_to_iter_csum.patch




[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Index of Archives]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux