CVE-2022-48909

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Therefore, it is impossible for the to be\ndisconnected at all.\n\nThis patch tries a very simple way to avoid this issue, once the state\nhas changed to SMC_ACTIVE after tcp_abort(), we can actively abort the\nsmc connection, considering that the state is SMC_INIT before\ntcp_abort(), abandoning the complete disconnection process should not\ncause too much problem.\n\nIn fact, this problem may exist as long as the CLC CONFIRM message is\nnot received by the server. Whether a timer should be added after\nsmc_close_final() needs to be discussed in the future. But even so, this\npatch provides a faster release for connection in above case, it should\nalso be valuable."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/smc/af_smc.c"], "versions": [{"version": "39f41f367b08650e9aa314e3a13fb6dda1e9eec7", "lessThan": "2e8d465b83db307f04ad265848f8ab3f78f6918f", "status": "affected", "versionType": "git"}, {"version": "39f41f367b08650e9aa314e3a13fb6dda1e9eec7", "lessThan": "80895b6f9154fb22d36fab311ccbb75503a2c87b", "status": "affected", "versionType": "git"}, {"version": "39f41f367b08650e9aa314e3a13fb6dda1e9eec7", "lessThan": "e98d46ccfa84b35a9e4b1ccdd83961b41a5d7ce5", "status": "affected", "versionType": "git"}, {"version": "39f41f367b08650e9aa314e3a13fb6dda1e9eec7", "lessThan": "9f1c50cf39167ff71dc5953a3234f3f6eeb8fcb5", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/smc/af_smc.c"], "versions": [{"version": "5.3", "status": "affected"}, {"version": "0", "lessThan": "5.3", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.104", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.27", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.16.13", "lessThanOrEqual": "5.16.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.17", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.10.104"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.15.27"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.16.13"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.3", "versionEndExcluding": "5.17"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/2e8d465b83db307f04ad265848f8ab3f78f6918f"}, {"url": "https://git.kernel.org/stable/c/80895b6f9154fb22d36fab311ccbb75503a2c87b"}, {"url": "https://git.kernel.org/stable/c/e98d46ccfa84b35a9e4b1ccdd83961b41a5d7ce5"}, {"url": "https://git.kernel.org/stable/c/9f1c50cf39167ff71dc5953a3234f3f6eeb8fcb5"}], "title": "net/smc: fix connection leak", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2022-48909", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:34:07.353240Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-12T17:33:11.908Z"}}]}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/smc/af_smc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "2e8d465b83db307f04ad265848f8ab3f78f6918f", "status": "affected", "version": "39f41f367b08650e9aa314e3a13fb6dda1e9eec7", "versionType": "git"}, {"lessThan": "80895b6f9154fb22d36fab311ccbb75503a2c87b", "status": "affected", "version": "39f41f367b08650e9aa314e3a13fb6dda1e9eec7", "versionType": "git"}, {"lessThan": "e98d46ccfa84b35a9e4b1ccdd83961b41a5d7ce5", "status": "affected", "version": "39f41f367b08650e9aa314e3a13fb6dda1e9eec7", "versionType": "git"}, {"lessThan": "9f1c50cf39167ff71dc5953a3234f3f6eeb8fcb5", "status": "affected", "version": "39f41f367b08650e9aa314e3a13fb6dda1e9eec7", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/smc/af_smc.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.3"}, {"lessThan": "5.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.104", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.27", "versionType": "semver"}, {"lessThanOrEqual": "5.16.*", "status": "unaffected", "version": "5.16.13", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.17", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "C340B44A-7A5B-4A6D-AB90-C8B64B25908B", "versionEndExcluding": "5.10.104", "versionStartIncluding": "5.3", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B3A8E092-3021-4A34-8DCE-B89D2238818B", "versionEndExcluding": "5.15.27", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "B871B667-EDC0-435D-909E-E918D8D90995", "versionEndExcluding": "5.16.13", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc1:*:*:*:*:*:*", "matchCriteriaId": "7BD5F8D9-54FA-4CB0-B4F0-CB0471FDDB2D", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc2:*:*:*:*:*:*", "matchCriteriaId": "E6E34B23-78B4-4516-9BD8-61B33F4AC49A", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc3:*:*:*:*:*:*", "matchCriteriaId": "C030FA3D-03F4-4FB9-9DBF-D08E5CAC51AA", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc4:*:*:*:*:*:*", "matchCriteriaId": "B2D2677C-5389-4AE9-869D-0F881E80D923", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc5:*:*:*:*:*:*", "matchCriteriaId": "EFA3917C-C322-4D92-912D-ECE45B2E7416", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.17:rc6:*:*:*:*:*:*", "matchCriteriaId": "BED18363-5ABC-4639-8BBA-68E771E5BB3F", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix connection leak\n\nThere's a potential leak issue under following execution sequence :\n\nsmc_release \t\t\t\tsmc_connect_work\nif (sk->sk_state == SMC_INIT)\n\t\t\t\t\tsend_clc_confirim\n\ttcp_abort();\n\t\t\t\t\t...\n\t\t\t\t\tsk.sk_state = SMC_ACTIVE\nsmc_close_active\nswitch(sk->sk_state) {\n...\ncase SMC_ACTIVE:\n\tsmc_close_final()\n\t// then wait peer closed\n\nUnfortunately, tcp_abort() may discard CLC CONFIRM messages that are\nstill in the tcp send buffer, in which case our connection token cannot\nbe delivered to the server side, which means that we cannot get a\npassive close message at all. Therefore, it is impossible for the to be\ndisconnected at all.\n\nThis patch tries a very simple way to avoid this issue, once the state\nhas changed to SMC_ACTIVE after tcp_abort(), we can actively abort the\nsmc connection, considering that the state is SMC_INIT before\ntcp_abort(), abandoning the complete disconnection process should not\ncause too much problem.\n\nIn fact, this problem may exist as long as the CLC CONFIRM message is\nnot received by the server. Whether a timer should be added after\nsmc_close_final() needs to be discussed in the future. But even so, this\npatch provides a faster release for connection in above case, it should\nalso be valuable."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/smc: reparar fuga de conexi\u00f3n Hay un posible problema de fuga en la siguiente secuencia de ejecuci\u00f3n: smc_release smc_connect_work if (sk->sk_state == SMC_INIT) send_clc_confirim tcp_abort(); ... sk.sk_state = SMC_ACTIVE smc_close_active switch(sk->sk_state) { ... case SMC_ACTIVE: smc_close_final() // luego espera el par cerrado Desafortunadamente, tcp_abort() puede descartar los mensajes CLC CONFIRM que todav\u00eda est\u00e1n en el b\u00fafer de env\u00edo tcp , en cuyo caso nuestro token de conexi\u00f3n no se puede entregar al lado del servidor, lo que significa que no podemos recibir ning\u00fan mensaje de cierre pasivo. Por lo tanto, es imposible desconectarlo en absoluto. Este parche intenta una forma muy sencilla de evitar este problema, una vez que el estado ha cambiado a SMC_ACTIVE despu\u00e9s de tcp_abort(), podemos cancelar activamente la conexi\u00f3n smc, considerando que el estado es SMC_INIT antes de tcp_abort(), abandonar el proceso de desconexi\u00f3n completo no deber\u00eda causar demasiado problema. De hecho, este problema puede existir siempre y cuando el servidor no reciba el mensaje CONFIRM CLC. En el futuro se deber\u00e1 discutir si se debe agregar un temporizador despu\u00e9s de smc_close_final(). Pero aun as\u00ed, este parche proporciona una liberaci\u00f3n m\u00e1s r\u00e1pida para la conexi\u00f3n. En el caso anterior, tambi\u00e9n deber\u00eda ser valioso."}], "id": "CVE-2022-48909", "lastModified": "2026-06-17T05:16:35.187", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2022-48909", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T15:34:07.353240Z", "version": "2.0.3"}}]}, "published": "2024-08-22T02:15:05.333", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/2e8d465b83db307f04ad265848f8ab3f78f6918f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/80895b6f9154fb22d36fab311ccbb75503a2c87b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9f1c50cf39167ff71dc5953a3234f3f6eeb8fcb5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e98d46ccfa84b35a9e4b1ccdd83961b41a5d7ce5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net/smc: fix connection leak", "id": "2307162", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2307162"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-401", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nnet/smc: fix connection leak\nThere's a potential leak issue under following execution sequence :\nsmc_release smc_connect_work\nif (sk->sk_state == SMC_INIT)\nsend_clc_confirim\ntcp_abort();\n...\nsk.sk_state = SMC_ACTIVE\nsmc_close_active\nswitch(sk->sk_state) {\n...\ncase SMC_ACTIVE:\nsmc_close_final()\n// then wait peer closed\nUnfortunately, tcp_abort() may discard CLC CONFIRM messages that are\nstill in the tcp send buffer, in which case our connection token cannot\nbe delivered to the server side, which means that we cannot get a\npassive close message at all. Therefore, it is impossible for the to be\ndisconnected at all.\nThis patch tries a very simple way to avoid this issue, once the state\nhas changed to SMC_ACTIVE after tcp_abort(), we can actively abort the\nsmc connection, considering that the state is SMC_INIT before\ntcp_abort(), abandoning the complete disconnection process should not\ncause too much problem.\nIn fact, this problem may exist as long as the CLC CONFIRM message is\nnot received by the server. Whether a timer should be added after\nsmc_close_final() needs to be discussed in the future. But even so, this\npatch provides a faster release for connection in above case, it should\nalso be valuable.", "A vulnerability was found in the Linux kernel's net/smc subsystem that addressed a connection leak issue. The problem occurred when a CLC CONFIRM message, crucial for completing a connection, was discarded after a TCP abort, preventing the server from closing the connection."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2022-48909", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-08-22T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-48909\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-48909\nhttps://lore.kernel.org/linux-cve-announce/2024082214-CVE-2022-48909-9726@gregkh/T"], "statement": "This issue marked as Moderate with \"not affected\" for Red Hat Enterprise Linux, as it is not vulnerable to this CVE. This is because the CVE does not impact the versions or configurations of the Linux kernel used in Red Hat's distributions. Additionally, some RHEL versions may be marked as \"will not fix\" due to the minimal impact of the issue, and no fix will be provided.", "threat_severity": "Moderate"}

{}