Patch "netfilter: nft_bitwise: fix register tracking" has been added to the 6.3-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

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

    netfilter: nft_bitwise: fix register tracking

to the 6.3-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:
     netfilter-nft_bitwise-fix-register-tracking.patch
and it can be found in the queue-6.3 subdirectory.

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



commit 341ee5cd711a1458dc86bd8515167c4cea598c0b
Author: Jeremy Sowden <jeremy@xxxxxxxxxx>
Date:   Thu May 25 15:07:24 2023 +0100

    netfilter: nft_bitwise: fix register tracking
    
    [ Upstream commit 14e8b293903785590a0ef168745ac84250cb1f4c ]
    
    At the end of `nft_bitwise_reduce`, there is a loop which is intended to
    update the bitwise expression associated with each tracked destination
    register.  However, currently, it just updates the first register
    repeatedly.  Fix it.
    
    Fixes: 34cc9e52884a ("netfilter: nf_tables: cancel tracking for clobbered destination registers")
    Signed-off-by: Jeremy Sowden <jeremy@xxxxxxxxxx>
    Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
    Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/net/netfilter/nft_bitwise.c b/net/netfilter/nft_bitwise.c
index 84eae7cabc67a..2527a01486efc 100644
--- a/net/netfilter/nft_bitwise.c
+++ b/net/netfilter/nft_bitwise.c
@@ -323,7 +323,7 @@ static bool nft_bitwise_reduce(struct nft_regs_track *track,
 	dreg = priv->dreg;
 	regcount = DIV_ROUND_UP(priv->len, NFT_REG32_SIZE);
 	for (i = 0; i < regcount; i++, dreg++)
-		track->regs[priv->dreg].bitwise = expr;
+		track->regs[dreg].bitwise = expr;
 
 	return false;
 }