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Message-ID: <2025022618-CVE-2022-49638-e524@gregkh> Date: Wed, 26 Feb 2025 03:23:21 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2022-49638: icmp: Fix data-races around sysctl. Description =========== In the Linux kernel, the following vulnerability has been resolved: icmp: Fix data-races around sysctl. While reading icmp sysctl variables, they can be changed concurrently. So, we need to add READ_ONCE() to avoid data-races. The Linux kernel CVE team has assigned CVE-2022-49638 to this issue. Affected and fixed versions =========================== Issue introduced in 3.18 with commit 4cdf507d54525842dfd9f6313fdafba039084046 and fixed in 4.9.324 with commit 1740e5922fbb705637ae9fa5203db132fc45f9f6 Issue introduced in 3.18 with commit 4cdf507d54525842dfd9f6313fdafba039084046 and fixed in 4.14.289 with commit 53ecd09ef2fb35fa69667ae8e414ef6b00fd3bf6 Issue introduced in 3.18 with commit 4cdf507d54525842dfd9f6313fdafba039084046 and fixed in 4.19.253 with commit edeec63b13c252193d626c2a48d7a2f0e7016dc2 Issue introduced in 3.18 with commit 4cdf507d54525842dfd9f6313fdafba039084046 and fixed in 5.4.207 with commit 0cba7ca667ceb06934746ddd9833a25847bde81d Issue introduced in 3.18 with commit 4cdf507d54525842dfd9f6313fdafba039084046 and fixed in 5.10.132 with commit e088ceb73c24ab4774da391d54a6426f4bfaefce Issue introduced in 3.18 with commit 4cdf507d54525842dfd9f6313fdafba039084046 and fixed in 5.15.56 with commit e2828e8c605853f71267825c9415437c0a93e4f2 Issue introduced in 3.18 with commit 4cdf507d54525842dfd9f6313fdafba039084046 and fixed in 5.18.13 with commit 798c2cf57c63ab39c8aac24d6a3d50f4fa5eeb06 Issue introduced in 3.18 with commit 4cdf507d54525842dfd9f6313fdafba039084046 and fixed in 5.19 with commit 48d7ee321ea5182c6a70782aa186422a70e67e22 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-2022-49638 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/icmp.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/1740e5922fbb705637ae9fa5203db132fc45f9f6 https://git.kernel.org/stable/c/53ecd09ef2fb35fa69667ae8e414ef6b00fd3bf6 https://git.kernel.org/stable/c/edeec63b13c252193d626c2a48d7a2f0e7016dc2 https://git.kernel.org/stable/c/0cba7ca667ceb06934746ddd9833a25847bde81d https://git.kernel.org/stable/c/e088ceb73c24ab4774da391d54a6426f4bfaefce https://git.kernel.org/stable/c/e2828e8c605853f71267825c9415437c0a93e4f2 https://git.kernel.org/stable/c/798c2cf57c63ab39c8aac24d6a3d50f4fa5eeb06 https://git.kernel.org/stable/c/48d7ee321ea5182c6a70782aa186422a70e67e22
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