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 B2712215F51 for ; Wed, 26 Feb 2025 02:13:12 +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=1740535992; cv=none; b=oDnCVoxI3yj0jIWJIJPdn/gBQHNQb6S6wNo5ZJq1YzxzjD+oB7JJEgRCNmFmzXTNBKnQ7oe71dXwm7XqF3SG7wSygjhCZSwwui/G0nxAnH4UCFMt8IJy/pwhgzMUP2Rrx7waiaX3pziHEmerMIkiO/UY+a6KwRYyRdVB4Bz7tLU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740535992; c=relaxed/simple; bh=4cAeQB6KBZV2lw+/lRPB/7IpQkekM7HlshIC186/pIE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=j9bDQbw7+UWrB6nMiPM/v2fBTHyRibaozIOrQlwftT4jwZZQGu2KGlVg1iX4Kzix5RL3k5yHwetmhhGsV/yI9hhBNQieHsM0L0W6AeNYSjylJYM91OmL9zJeqeBYfGcDQIH9PSUhfEsOnisdQ86x1iWAJM3606FnSzA440pfkbk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=mrgVOpb4; 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="mrgVOpb4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 85012C4CEDD; Wed, 26 Feb 2025 02:13:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1740535992; bh=4cAeQB6KBZV2lw+/lRPB/7IpQkekM7HlshIC186/pIE=; h=From:To:Cc:Subject:Date:Reply-to:From; b=mrgVOpb4FkGqeql8+gVnPiYvubO7rfgH9sUmeKkmu7M1j3WaZSYYTPg5PnUSSR7Nz +ixaPh6pFK3SwSQcg4LYGG0+Y9YSvDHEptGfmSvA3PfRvf7k6VVfgsKwDSxUmm6k+4 tI5ykLU8d1IzAx5VxWM2nOAaBGUFEoAJcMnllAgE= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2022-49345: net: xfrm: unexport __init-annotated xfrm4_protocol_init() Date: Wed, 26 Feb 2025 03:10:19 +0100 Message-ID: <2025022641-CVE-2022-49345-5c80@gregkh> X-Mailer: git-send-email 2.48.1 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=4005; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=4cAeQB6KBZV2lw+/lRPB/7IpQkekM7HlshIC186/pIE=; b=owGbwMvMwCRo6H6F97bub03G02pJDOn7yp9+1zAqcwhuXdP4/Pvu8mkTVs77to/d7Y73gvx/O t+sq0WXdMSyMAgyMciKKbJ82cZzdH/FIUUvQ9vTMHNYmUCGMHBxCsBE1vkyzPf5dU/rOMe1K30b uo+m/zt+5dOqX5EM873CbVy8V8xY5/30saiGiFuV545TwgA= 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: net: xfrm: unexport __init-annotated xfrm4_protocol_init() EXPORT_SYMBOL and __init is a bad combination because the .init.text section is freed up after the initialization. Hence, modules cannot use symbols annotated __init. The access to a freed symbol may end up with kernel panic. modpost used to detect it, but it has been broken for a decade. Recently, I fixed modpost so it started to warn it again, then this showed up in linux-next builds. There are two ways to fix it: - Remove __init - Remove EXPORT_SYMBOL I chose the latter for this case because the only in-tree call-site, net/ipv4/xfrm4_policy.c is never compiled as modular. (CONFIG_XFRM is boolean) The Linux kernel CVE team has assigned CVE-2022-49345 to this issue. Affected and fixed versions =========================== Issue introduced in 3.15 with commit 2f32b51b609faea1e40bb8c5bd305f1351740936 and fixed in 4.9.318 with commit c58d82a1264813e69119c13e9804e2e60b664ad5 Issue introduced in 3.15 with commit 2f32b51b609faea1e40bb8c5bd305f1351740936 and fixed in 4.14.283 with commit e53cd3814504b2cadaba4d5a8a07eeea9ddacd03 Issue introduced in 3.15 with commit 2f32b51b609faea1e40bb8c5bd305f1351740936 and fixed in 4.19.247 with commit 31f3c6a4dcd3260a386e62cef2d5b36e902600a1 Issue introduced in 3.15 with commit 2f32b51b609faea1e40bb8c5bd305f1351740936 and fixed in 5.4.198 with commit ef6d2354de238b065d8799c80da4be9a6af18e39 Issue introduced in 3.15 with commit 2f32b51b609faea1e40bb8c5bd305f1351740936 and fixed in 5.10.122 with commit be3884d5cd04ccd58294b83a02d70b7c5fca19d3 Issue introduced in 3.15 with commit 2f32b51b609faea1e40bb8c5bd305f1351740936 and fixed in 5.15.47 with commit 85a055c03691e51499123194a14a0c249cf33227 Issue introduced in 3.15 with commit 2f32b51b609faea1e40bb8c5bd305f1351740936 and fixed in 5.17.15 with commit e04d59cfe0c0129df7aba7ef7bb17b96be2a64f2 Issue introduced in 3.15 with commit 2f32b51b609faea1e40bb8c5bd305f1351740936 and fixed in 5.18.4 with commit 2b253fbc9f7b5db18d716436bdcf8ecef09fd63d Issue introduced in 3.15 with commit 2f32b51b609faea1e40bb8c5bd305f1351740936 and fixed in 5.19 with commit 4a388f08d8784af48f352193d2b72aaf167a57a1 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-2022-49345 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/ipv4/xfrm4_protocol.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/c58d82a1264813e69119c13e9804e2e60b664ad5 https://git.kernel.org/stable/c/e53cd3814504b2cadaba4d5a8a07eeea9ddacd03 https://git.kernel.org/stable/c/31f3c6a4dcd3260a386e62cef2d5b36e902600a1 https://git.kernel.org/stable/c/ef6d2354de238b065d8799c80da4be9a6af18e39 https://git.kernel.org/stable/c/be3884d5cd04ccd58294b83a02d70b7c5fca19d3 https://git.kernel.org/stable/c/85a055c03691e51499123194a14a0c249cf33227 https://git.kernel.org/stable/c/e04d59cfe0c0129df7aba7ef7bb17b96be2a64f2 https://git.kernel.org/stable/c/2b253fbc9f7b5db18d716436bdcf8ecef09fd63d https://git.kernel.org/stable/c/4a388f08d8784af48f352193d2b72aaf167a57a1