{
  "threat_severity" : "Important",
  "public_date" : "2023-02-23T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: net/ulp: use-after-free in listening ULP sockets",
    "id" : "2176192",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2176192"
  },
  "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 or CONFIG_XFRM_ESPINTCP has to be configured, but the operation does not require any privilege.\nThere is a use-after-free bug of icsk_ulp_data of a struct inet_connection_sock.\nWhen CONFIG_TLS is 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 TCP_ULP operation does not require any privilege.\nWe recommend upgrading past commit 2c02d41d71f90a5168391b6a5f2954112ba2307c", "A use-after-free flaw was found in the Linux kernel’s 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." ],
  "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\").",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2023-05-16T00:00:00Z",
    "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 8.1 Update Services for SAP Solutions",
    "release_date" : "2023-05-17T00:00:00Z",
    "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 8.2 Advanced Update Support",
    "release_date" : "2023-07-18T00:00:00Z",
    "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 Telecommunications Update Service",
    "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 Update Services for SAP Solutions",
    "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 8.4 Extended Update Support",
    "release_date" : "2023-04-04T00:00:00Z",
    "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" : "2023-04-05T00:00:00Z",
    "advisory" : "RHSA-2023:1662",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.4",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Extended Update Support",
    "release_date" : "2023-04-18T00:00:00Z",
    "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" : "2023-04-21T00:00:00Z",
    "advisory" : "RHSA-2023:1923",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.6",
    "package" : "kpatch-patch"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2023-05-09T00:00:00Z",
    "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 9.0 Extended Update Support",
    "release_date" : "2023-06-06T00:00:00Z",
    "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 Virtualization 4 for Red Hat Enterprise Linux 8",
    "release_date" : "2023-04-18T00:00:00Z",
    "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" : "2023-06-06T00:00:00Z",
    "advisory" : "RHSA-2023:3491",
    "cpe" : "cpe:/o:redhat:rhev_hypervisor:4.4::el8",
    "package" : "redhat-virtualization-host-0:4.5.3-202306050942_8.6"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  } ],
  "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" ],
  "name" : "CVE-2023-0461",
  "mitigation" : {
    "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.",
    "lang" : "en:us"
  },
  "csaw" : false
}