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Message-ID: <2025022610-CVE-2022-49595-6abc@gregkh> Date: Wed, 26 Feb 2025 03:22:38 +0100 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: CVE-2022-49595: tcp: Fix a data-race around sysctl_tcp_probe_threshold. Description =========== In the Linux kernel, the following vulnerability has been resolved: tcp: Fix a data-race around sysctl_tcp_probe_threshold. While reading sysctl_tcp_probe_threshold, it can be changed concurrently. Thus, we need to add READ_ONCE() to its reader. The Linux kernel CVE team has assigned CVE-2022-49595 to this issue. Affected and fixed versions =========================== Issue introduced in 4.1 with commit 6b58e0a5f32dedb609438bb9c9c82aa6e23381f2 and fixed in 4.9.325 with commit 9b5dc7ad6da1373d3c60d4b869d688f996e5d219 Issue introduced in 4.1 with commit 6b58e0a5f32dedb609438bb9c9c82aa6e23381f2 and fixed in 4.14.290 with commit 44768749980d53bc01980d9c060f736808d11af0 Issue introduced in 4.1 with commit 6b58e0a5f32dedb609438bb9c9c82aa6e23381f2 and fixed in 4.19.254 with commit 96900fa61777402eb5056269d8000aace33a8b6c Issue introduced in 4.1 with commit 6b58e0a5f32dedb609438bb9c9c82aa6e23381f2 and fixed in 5.4.208 with commit b04817c94fbd285a967d9b830b274fe9998c9c0b Issue introduced in 4.1 with commit 6b58e0a5f32dedb609438bb9c9c82aa6e23381f2 and fixed in 5.10.134 with commit d452ce36f2d4c402fa3f5275c9677f80166e7fc6 Issue introduced in 4.1 with commit 6b58e0a5f32dedb609438bb9c9c82aa6e23381f2 and fixed in 5.15.58 with commit f524c3e7f6cdad66b3b6a912cef47b656f8b0de3 Issue introduced in 4.1 with commit 6b58e0a5f32dedb609438bb9c9c82aa6e23381f2 and fixed in 5.18.15 with commit fa5fb2cf9393db898772db8cb897ed5fd265eb78 Issue introduced in 4.1 with commit 6b58e0a5f32dedb609438bb9c9c82aa6e23381f2 and fixed in 5.19 with commit 92c0aa4175474483d6cf373314343d4e624e882a 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-2022-49595 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/tcp_output.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/9b5dc7ad6da1373d3c60d4b869d688f996e5d219 https://git.kernel.org/stable/c/44768749980d53bc01980d9c060f736808d11af0 https://git.kernel.org/stable/c/96900fa61777402eb5056269d8000aace33a8b6c https://git.kernel.org/stable/c/b04817c94fbd285a967d9b830b274fe9998c9c0b https://git.kernel.org/stable/c/d452ce36f2d4c402fa3f5275c9677f80166e7fc6 https://git.kernel.org/stable/c/f524c3e7f6cdad66b3b6a912cef47b656f8b0de3 https://git.kernel.org/stable/c/fa5fb2cf9393db898772db8cb897ed5fd265eb78 https://git.kernel.org/stable/c/92c0aa4175474483d6cf373314343d4e624e882a
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