From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f73.google.com (mail-pj1-f73.google.com [209.85.216.73]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EEBD53043DC for ; Sun, 15 Feb 2026 20:43:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771188239; cv=none; b=CAMCH+81QvRtlizehlsSCBdHjPnQKNrqLtIZtravZfwkaPGbqfg5hXtPWuh4AWdrvWNitk7PBEljEHl5kUvozLl9UA8AD5APT+CuiProZcfq3t8lHC2zz4GVpUhX4mphTa0MwVRr5iIYLbdWpfZKcsUc9kkUk+brlqMz+J1SRek= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771188239; c=relaxed/simple; bh=o+yVCiY78QhoLCqpwKO3FNueFAZmzLearb9gcg4AbIE=; h=Date:Mime-Version:Message-ID:Subject:From:To:Cc:Content-Type; b=b5fIrJQUpXu5e0FlMhd0SdOXvVW/mpLnlH5xkVLI1tV7a1mvywr5H0jrEeX6lMnZvuAi3gjUM97db9U1SeJ2oTFJiGTDMd3TFUaLd6VaknZwlfN/nX89vx7zZEwiQ1PQD0EQR7Faj1Q1Q5f9dS3UlkjMviG/JwNCu1cNkxUjZGc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--kuniyu.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=mLGCj3oU; arc=none smtp.client-ip=209.85.216.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--kuniyu.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="mLGCj3oU" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-354bee18a62so1891010a91.0 for ; Sun, 15 Feb 2026 12:43:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1771188236; x=1771793036; darn=vger.kernel.org; h=cc:to:from:subject:message-id:mime-version:date:from:to:cc:subject :date:message-id:reply-to; bh=JDzLkkwQ2zndYGmIa0T9VkXy0vnxohQ08L3DQyRoTBk=; b=mLGCj3oUOkA8KWyszuP2lPRDxZg1TRuOwmSXQYwOHakRMe0q5KzBsBs5d9xqLLzm/a BPjlXXltnr6EVDurivo6rNvetO+ttukVmfAHG1lhwhgM1AfAu9jPnrHjFnSSy+oJaEQk Bjl6YvC7IZ2ajA95Qz/akdFJeHzsblPkCom9ncxufRzkp5tsUdFAeeu+qbNft19lzDHK 9vWTyg4kNPDu8asG49imJbJxLLlFpiA1KjmWhmdnhpTA6zCJqlRIpuucVZ7K2tj7ETKn FYf7sIWXQ2SYquiTsguu6stVqx88kSqfP/J8xvqY7lETdaM2oV3IvH9qyNC0Lgto2vVW sJ+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771188236; x=1771793036; h=cc:to:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=JDzLkkwQ2zndYGmIa0T9VkXy0vnxohQ08L3DQyRoTBk=; b=WVriYXh+0SHR5nXsUqWxa4tbGDbOWb7wPSjNuLjSsxb4lYZPqHSyTh9bo/JW0Ksaw6 PizRt2hcT8V/okokYiu0/v7nl7fejaRB9Itm2U5O5FUl1xMe9Wq+I/IC+Zu4PB6cx2kJ mITUrIM32zlacNulbvNc7TSMqWXd4mssDLSfmGKq5seTkkd4C662mNfjgT9r5oRjnNA5 stCIFXlaZa3gDvfhARmCQW546wykqwqO3RqZidlHBEtmKIyrUpvFHEI2kTv4kYudpB65 E2BHelg6mYbCV1uipmDvhmGdaPjyDYIftGj+QCwfoXvSc85Wh8IDUalUegojctmluMoX lE0w== X-Forwarded-Encrypted: i=1; AJvYcCVv+oLWfd260NwJ/CTqThmsjtSE0un9Qym5aphy19rlaFgzbrCiFqMqL8qw2rBl6JeY51DaNJc=@vger.kernel.org X-Gm-Message-State: AOJu0Ywggyw+e5fe9qlVmppFhTON++HypSFCMnMuXroD8vxS38njO1QG Ud5RM69SoUC101BeNsRO7Z+gh2KBCVCpSBEVFLC6Iw35chOYyZhwB59V9KuYKzi15snWIyK1i9I /wvF00A== X-Received: from pjbkk11.prod.google.com ([2002:a17:90b:4a0b:b0:354:e865:5165]) (user=kuniyu job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:586f:b0:34c:a29d:992a with SMTP id 98e67ed59e1d1-356aada821dmr8183369a91.34.1771188236118; Sun, 15 Feb 2026 12:43:56 -0800 (PST) Date: Sun, 15 Feb 2026 20:41:35 +0000 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 X-Mailer: git-send-email 2.53.0.310.g728cabbaf7-goog Message-ID: <20260215204353.3645744-1-kuniyu@google.com> Subject: [PATCH v1 bpf/net 0/6] sockmap: Fix UAF and broken memory accounting for UDP. From: Kuniyuki Iwashima To: John Fastabend , Jakub Sitnicki Cc: Willem de Bruijn , Cong Wang , Kuniyuki Iwashima , Kuniyuki Iwashima , bpf@vger.kernel.org, netdev@vger.kernel.org Content-Type: text/plain; charset="UTF-8" syzbot reported 3 issues in SOCKMAP for UDP. Patch 1 - 2 fix lockless accesses to sk->sk_data_ready() and sk->sk_write_space(). Patch 3 fixes UAF in sk_msg_recvmsg(). Patch 4 - 5 consolidate sk_psock_skb_ingress_self() into sk_psock_skb_ingress() as prep for patch 6. Patch 6 fixes broken memory accounting. Kuniyuki Iwashima (6): sockmap: Annotate sk->sk_data_ready() for UDP. sockmap: Annotate sk->sk_write_space() for UDP. sockmap: Fix use-after-free in udp_bpf_recvmsg(). sockmap: Pass gfp_t flag to sk_psock_skb_ingress(). sockmap: Consolidate sk_psock_skb_ingress_self(). sockmap: Fix broken memory accounting for UDP. include/net/udp.h | 2 ++ net/core/skmsg.c | 90 ++++++++++++++++++---------------------------- net/core/sock.c | 2 +- net/ipv4/udp.c | 11 +++++- net/ipv4/udp_bpf.c | 9 +++++ 5 files changed, 57 insertions(+), 57 deletions(-) -- 2.53.0.310.g728cabbaf7-goog