{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2023-0461", "assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "state": "PUBLISHED", "assignerShortName": "Google", "dateReserved": "2023-01-24T09:47:24.966Z", "datePublished": "2023-02-28T14:23:02.224Z", "dateUpdated": "2024-08-02T05:10:56.165Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "packageName": "kernel", "product": "Linux Kernel", "repo": "https://git.kernel.org", "vendor": "Linux", "versions": [{"lessThan": "2c02d41d71f90a5168391b6a5f2954112ba2307c", "status": "affected", "version": "0", "versionType": "git"}]}], "credits": [{"lang": "en", "type": "finder", "user": "00000000-0000-4000-9000-000000000000", "value": "slipper"}], "datePublic": "2023-01-02T23:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag <code>CONFIG_TLS</code>&nbsp;or <code>CONFIG_XFRM_ESPINTCP</code>&nbsp;has to be configured, but the operation does not require any privilege.</p><p>There is a use-after-free bug of <code>icsk_ulp_data</code>&nbsp;of a <code>struct inet_connection_sock</code>.</p><p>When <code>CONFIG_TLS</code>&nbsp;is enabled, user can install a tls context (<code>struct tls_context</code>) on a connected tcp socket. The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is created from the listener, the context is inherited and vulnerable.</p><p>The <code>setsockopt</code>&nbsp;<code>TCP_ULP</code>&nbsp;operation does not require any privilege.</p>We recommend upgrading past commit&nbsp;2c02d41d71f90a5168391b6a5f2954112ba2307c"}], "value": "There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. 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{"affected_release": [{"advisory": "RHSA-2023:2736", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-477.10.1.rt7.274.el8_8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-05-16T00:00:00Z"}, {"advisory": "RHSA-2023:2951", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-477.10.1.el8_8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2023-05-16T00:00:00Z"}, {"advisory": "RHSA-2023:3190", "cpe": "cpe:/o:redhat:rhel_e4s:8.1", "package": "kernel-0:4.18.0-147.83.1.el8_1", "product_name": "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions", "release_date": "2023-05-17T00:00:00Z"}, {"advisory": "RHSA-2023:3191", "cpe": "cpe:/o:redhat:rhel_e4s:8.1", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions", "release_date": "2023-05-17T00:00:00Z"}, {"advisory": "RHSA-2023:4125", "cpe": "cpe:/o:redhat:rhel_aus:8.2", "package": "kernel-0:4.18.0-193.109.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Advanced Update Support", "release_date": "2023-07-18T00:00:00Z"}, {"advisory": "RHSA-2023:4126", "cpe": "cpe:/a:redhat:rhel_tus:8.2::nfv", "package": "kernel-rt-0:4.18.0-193.109.1.rt13.160.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service", "release_date": "2023-07-18T00:00:00Z"}, {"advisory": "RHSA-2023:4125", "cpe": "cpe:/o:redhat:rhel_tus:8.2", "package": "kernel-0:4.18.0-193.109.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service", "release_date": "2023-07-18T00:00:00Z"}, {"advisory": "RHSA-2023:4125", "cpe": "cpe:/o:redhat:rhel_e4s:8.2", "package": "kernel-0:4.18.0-193.109.1.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions", "release_date": "2023-07-18T00:00:00Z"}, {"advisory": "RHSA-2023:4146", "cpe": "cpe:/o:redhat:rhel_e4s:8.2", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions", "release_date": "2023-07-18T00:00:00Z"}, {"advisory": "RHSA-2023:1556", "cpe": "cpe:/a:redhat:rhel_eus:8.4::nfv", "package": "kernel-rt-0:4.18.0-305.86.2.rt7.160.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2023-04-04T00:00:00Z"}, {"advisory": "RHSA-2023:1557", "cpe": "cpe:/o:redhat:rhel_eus:8.4", "package": "kernel-0:4.18.0-305.86.2.el8_4", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2023-04-04T00:00:00Z"}, {"advisory": "RHSA-2023:1662", "cpe": "cpe:/o:redhat:rhel_eus:8.4", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.4 Extended Update Support", "release_date": "2023-04-05T00:00:00Z"}, {"advisory": "RHSA-2023:1841", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "kernel-0:4.18.0-372.52.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-04-18T00:00:00Z"}, {"advisory": "RHSA-2023:1923", "cpe": "cpe:/o:redhat:rhel_eus:8.6", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 8.6 Extended Update Support", "release_date": "2023-04-21T00:00:00Z"}, {"advisory": "RHSA-2023:2458", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.11.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2023:2148", "cpe": "cpe:/a:redhat:enterprise_linux:9::nfv", "package": "kernel-rt-0:5.14.0-284.11.1.rt14.296.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2023:2458", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-284.11.1.el9_2", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2023-05-09T00:00:00Z"}, {"advisory": "RHSA-2023:3465", "cpe": "cpe:/a:redhat:rhel_eus:9.0", "package": "kernel-0:5.14.0-70.58.1.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-06-06T00:00:00Z"}, {"advisory": "RHSA-2023:3470", "cpe": "cpe:/a:redhat:rhel_eus:9.0::nfv", "package": "kernel-rt-0:5.14.0-70.58.1.rt21.129.el9_0", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-06-06T00:00:00Z"}, {"advisory": "RHSA-2023:3490", "cpe": "cpe:/o:redhat:rhel_eus:9.0", "package": "kpatch-patch", "product_name": "Red Hat Enterprise Linux 9.0 Extended Update Support", "release_date": "2023-06-06T00:00:00Z"}, {"advisory": "RHSA-2023:1841", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "kernel-0:4.18.0-372.52.1.el8_6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2023-04-18T00:00:00Z"}, {"advisory": "RHSA-2023:3491", "cpe": "cpe:/o:redhat:rhev_hypervisor:4.4::el8", "package": "redhat-virtualization-host-0:4.5.3-202306050942_8.6", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8", "release_date": "2023-06-06T00:00:00Z"}], "bugzilla": {"description": "kernel: net/ulp: use-after-free in listening ULP sockets", "id": "2176192", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2176192"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["There is a use-after-free vulnerability in the Linux Kernel which can be exploited to achieve local privilege escalation. To reach the vulnerability kernel configuration flag CONFIG_TLS\u00a0or CONFIG_XFRM_ESPINTCP\u00a0has to be configured, but the operation does not require any privilege.\nThere is a use-after-free bug of icsk_ulp_data\u00a0of a struct inet_connection_sock.\nWhen CONFIG_TLS\u00a0is enabled, user can install a tls context (struct tls_context) on a connected tcp socket. The context is not cleared if this socket is disconnected and reused as a listener. If a new socket is created from the listener, the context is inherited and vulnerable.\nThe setsockopt\u00a0TCP_ULP\u00a0operation does not require any privilege.\nWe recommend upgrading past commit\u00a02c02d41d71f90a5168391b6a5f2954112ba2307c", "A use-after-free flaw was found in the Linux kernel\u2019s TLS protocol functionality in how a user installs a tls context (struct tls_context) on a connected TCP socket. This flaw allows a local user to crash or potentially escalate their privileges on the system."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, prevent module tls from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically."}, "name": "CVE-2023-0461", "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"}], "public_date": "2023-02-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-0461\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-0461\nhttps://github.com/torvalds/linux/commit/2c02d41d71f90a5168391b6a5f2954112ba2307c"], "statement": "Versions of Red Hat Enterprise Linux before 8 are not affected by this vulnerability as they did not include the upstream commit 734942c (\"tcp: ULP infrastructure\").", "threat_severity": "Important", "upstream_fix": "kernel 6.2-rc3"}