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 E1D941494CC for ; Wed, 26 Feb 2025 02:23:56 +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=1740536637; cv=none; b=Hby/h+UPHVlqyTFn+zQd4gzB8vJ34eHM0cbux7XzoIV1Qroi/0lPlOM285Z4TdUjJp2JLXUSMT67u0LkzPusNLcZ+TsPXksvuoJ1DBl+m9dlIlAif+Zl8gGfyelsjC12rPHTg9Qtgv0QZVV3/5LZARQ874sfMvyOrO+IIIzczwY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740536637; c=relaxed/simple; bh=yma3BnVFQjFFVfvDyhvPeAz/SCkTTIMDCJCA55rbKvM=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=fu2kflxaBlR0+RRqnG4FUXeT2Y72O66mDtv8OxfVKaDZRANXSsObmzAWbQAG5kR2adtZssFF0ir/jwp50wbi+crjcMZx1wlMbZ9Gh7A1aJPArS6ku7AoS9tDG9+lYg3zgDNdgzli4jRFj/WMULv9q81GF0c9SEFwqSytglNtqmw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=zs+Q3t3X; 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="zs+Q3t3X" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 45A7CC4CEDD; Wed, 26 Feb 2025 02:23:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1740536636; bh=yma3BnVFQjFFVfvDyhvPeAz/SCkTTIMDCJCA55rbKvM=; h=From:To:Cc:Subject:Date:Reply-to:From; b=zs+Q3t3XHClrO3vP8eGTaygMT68BV4+gEclzGR1Q0tTffmhSjXGv1XsCCY52gw70H wJPD/LAbHeRvgw6PI1u8HQS2bKca2E/B2EKxFA01NfwvBClypfiwH2LE6ffYgUNWvA zi90hJ2L/j9xrLZowyQnxNhGhpDNAX9NFjbr3pHA= From: Greg Kroah-Hartman To: linux-cve-announce@vger.kernel.org Cc: Greg Kroah-Hartman Subject: CVE-2022-49579: ipv4: Fix data-races around sysctl_fib_multipath_hash_policy. Date: Wed, 26 Feb 2025 03:22:22 +0100 Message-ID: <2025022608-CVE-2022-49579-4f40@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=2177; i=gregkh@linuxfoundation.org; h=from:subject:message-id; bh=yma3BnVFQjFFVfvDyhvPeAz/SCkTTIMDCJCA55rbKvM=; b=owGbwMvMwCRo6H6F97bub03G02pJDOn7qi5kTrtskuA4L/3FkskyvFlii6vLpDjOz1oVclx5y u1z6XNnd8SyMAgyMciKKbJ82cZzdH/FIUUvQ9vTMHNYmUCGMHBxCsBEGuMZ5ofUy/46dG5mTqdT i83ZX6GeDy8InWNYsO2P8Ndvz7tex0oGfJ7qfIx79l1HFgA= 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: ipv4: Fix data-races around sysctl_fib_multipath_hash_policy. While reading sysctl_fib_multipath_hash_policy, it can be changed concurrently. Thus, we need to add READ_ONCE() to its readers. The Linux kernel CVE team has assigned CVE-2022-49579 to this issue. Affected and fixed versions =========================== Issue introduced in 4.12 with commit bf4e0a3db97eb882368fd82980b3b1fa0b5b9778 and fixed in 5.15.58 with commit 21fb844bc1dc1461f5038d655aa1a14f39e13049 Issue introduced in 4.12 with commit bf4e0a3db97eb882368fd82980b3b1fa0b5b9778 and fixed in 5.18.15 with commit 918ee6592ab9a2ff5316d06cfd4aaef60ccabec6 Issue introduced in 4.12 with commit bf4e0a3db97eb882368fd82980b3b1fa0b5b9778 and fixed in 5.19 with commit 7998c12a08c97cc26660532c9f90a34bd7d8da5a 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-2022-49579 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: drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c net/ipv4/route.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/21fb844bc1dc1461f5038d655aa1a14f39e13049 https://git.kernel.org/stable/c/918ee6592ab9a2ff5316d06cfd4aaef60ccabec6 https://git.kernel.org/stable/c/7998c12a08c97cc26660532c9f90a34bd7d8da5a