From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5235A35F192 for ; Wed, 22 Jul 2026 00:54:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784681645; cv=none; b=b3+Mq2KvHHAiszLn1yufZA+DoENTbze0oKPcBN+CQRRQ4+R7d00JLimNLEekO9/sNZUrAxwBTSwZ05tVHjXIiSPZyzKfwOFwfRwyhWoREEe8Z2A2JcR2K+2zx8uLvxgSIOOFh2c6u5AKoBC2bnSegW45GamNBfQiUTf9XJHv6Vs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784681645; c=relaxed/simple; bh=2Tj0RY/gKQs5yrMV0gEqDHBf2NUabCZlWNRYeIPEZrk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jnO1FGIe/KMAPuViPG/Bl//P3wf8ZDQv0vWIDlmI7TJ4wG91qjApud/bkc05Var2mKlaAqodL4hyTK7AeB3+w5hUFNGs2hwzm9rtGSnBAfnyqMfTrrwx4wNqByLb7kTajwdVMwpbDbcQiaDXVadYLjYds3GurXdEgoV8axklznM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Yv6oA/X2; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Yv6oA/X2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 354E81F000E9; Wed, 22 Jul 2026 00:54:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784681642; bh=RY9t3Nxt+kocw7miEoSnl0bzrcTmAaknlsRRqOwvjJM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Yv6oA/X2gC1edbK+vyWuVMwtoWRHaMBdgRC/xYDUu1+sAt6NIqYAhog6kyTkdpTXK TgBflngHw8G0xC8XHCLaQOxewpBhGcIpYmqVqVZuKpsmPQRIcITeIJf/aR17MY7iyX LP95Rt8dlKC9uvEujrMFFMSwWRwEnESa6yQxxaZweGJc8lJNjnLe93hlPKHAuTAu9A RHxewmwPBBlhWrkL5XNcMZ+kiv9F+i5unxDTrAlJHAoqCkk2JzBWK+jGoZFb8N1H2t zJ1GBeRiz282V3ThN9cGDH0QfXfC1AWzURPxAF8/XunqGaH9WxruysE/0gTqTV+Fj1 jbmiZdeec0UnQ== From: Sasha Levin To: stable@vger.kernel.org Cc: Sasha Levin , Shivam Kumar , Christoph Hellwig , Sagi Grimberg , Keith Busch Subject: Re: [PATCH v2 5.15.y] nvmet-tcp: Fix potential UAF when ddgst mismatch Date: Tue, 21 Jul 2026 20:53:48 -0400 Message-ID: <20260721201114.0001-stable-reply@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260721135438.14435-1-kumar.shivam43666@gmail.com> References: <20260721135438.14435-1-kumar.shivam43666@gmail.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit > commit dbbd07d0a7020b80f6a7028e561908f7b83b3d5a upstream. > > When data digest is enabled on an NVMe/TCP connection and a digest > mismatch occurs on a non-final H2C_DATA PDU during an R2T-based > data transfer, the digest error handler in nvmet_tcp_try_recv_ddgst() > calls nvmet_req_uninit() - which performs percpu_ref_put() on the > submission queue - but does NOT mark the command as completed. Queued for 5.15, thanks. -- Thanks, Sasha