From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 07F091F470C for ; Fri, 27 Dec 2024 13:56:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735307788; cv=none; b=CMPpGED9siIyByHwIzetYNH/n8OcTymx2VkWNt/0gS2x1hjgyr7TSvfkjEPcYwX3WeilC1WogUOjMz3nMMrgnpeBXAc4Yg8JrTuJVpT3gGxHprfLpDrAVPS0tWHwudqV/VFKiduG90na77C7vv5VFOR/y9AjorvAR1f+dJebKjY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735307788; c=relaxed/simple; bh=Kiyvo2YFzIvvJlODTjL0Jb69nvQjC/UiemMvF0GpAF0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=JSHL2v1PWeD+/OiaKcQq6wRupeaI3Y5RLZVZJrBaz5dgLQmVAdxE7E9dOEhRYGbABIoNrUzrh6IpPgrPQdHYRjPTW9vSRcPQRA6CjgJdhun/fdwEWxl/toM2827U9VdKp8Z3yeDW1M0AyTcuakRwqVOszMIFXbzFlWP8SJFFpTI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=cugP9YY+; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="cugP9YY+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5FE8FC4CED0; Fri, 27 Dec 2024 13:56:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1735307787; bh=Kiyvo2YFzIvvJlODTjL0Jb69nvQjC/UiemMvF0GpAF0=; h=From:To:Cc:Subject:Date:Reply-to:From; b=cugP9YY+p7MeW3QjqEq3TzHq01Bm7uNOiSsB6/SwBoXux+Cnt41+mNkenyRr+KtzU kpcBvrDDUpbMp2rAga5mR2Tw4KeRDNolU26j+UqtP8LP+RfzL9ZXgluzLJ6cxaDqTX RbZogrvP5gdjX06fv7YfKukB6/Ib5Gb/0iiKqGS0= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2024-53236: xsk: Free skb when TX metadata options are invalid Date: Fri, 27 Dec 2024 14:53:22 +0100 Message-ID: <2024122738-CVE-2024-53236-0ab4@gregkh> X-Mailer: git-send-email 2.47.1 Precedence: bulk X-Mailing-List: linux-cve-announce@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reply-to: , X-Developer-Signature: v=1; a=openpgp-sha256; l=2492; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=Kiyvo2YFzIvvJlODTjL0Jb69nvQjC/UiemMvF0GpAF0=; b=owGbwMvMwCRo6H6F97bub03G02pJDOl5G9VXX1/e9f3AXvH/jhbNn6fOqtRg0PvlUf6NZ99kf lnX+9H3O2JZGASZGGTFFFm+bOM5ur/ikKKXoe1pmDmsTCBDGLg4BWAiwu8Y5tnff6H4l/9PYzE/ +5R/tcw9PXelvjHMU3+UIXnLdF791Nqmhyzn9R+GyqSZAwA= X-Developer-Key: i=gregkh@linuxfoundation.org; a=openpgp; fpr=F4B60CC5BF78C2214A313DCB3147D40DDB2DFB29 Content-Transfer-Encoding: 8bit Description =========== In the Linux kernel, the following vulnerability has been resolved: xsk: Free skb when TX metadata options are invalid When a new skb is allocated for transmitting an xsk descriptor, i.e., for every non-multibuf descriptor or the first frag of a multibuf descriptor, but the descriptor is later found to have invalid options set for the TX metadata, the new skb is never freed. This can leak skbs until the send buffer is full which makes sending more packets impossible. Fix this by freeing the skb in the error path if we are currently dealing with the first frag, i.e., an skb allocated in this iteration of xsk_build_skb. The Linux kernel CVE team has assigned CVE-2024-53236 to this issue. Affected and fixed versions =========================== Issue introduced in 6.8 with commit 48eb03dd26304c24f03bdbb9382e89c8564e71df and fixed in 6.11.11 with commit 7f0d0dd5a7f437d83cff954bc321f1a9b181efd5 Issue introduced in 6.8 with commit 48eb03dd26304c24f03bdbb9382e89c8564e71df and fixed in 6.12.2 with commit d5d346deb65efa8453f8481bcea75c1a590439e7 Issue introduced in 6.8 with commit 48eb03dd26304c24f03bdbb9382e89c8564e71df and fixed in 6.13-rc1 with commit 0c0d0f42ffa6ac94cd79893b7ed419c15e1b45de Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2024-53236 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: net/xdp/xsk.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/7f0d0dd5a7f437d83cff954bc321f1a9b181efd5 https://git.kernel.org/stable/c/d5d346deb65efa8453f8481bcea75c1a590439e7 https://git.kernel.org/stable/c/0c0d0f42ffa6ac94cd79893b7ed419c15e1b45de