{
  "threat_severity" : "Important",
  "public_date" : "2025-02-05T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: netfilter: nf_tables: don't skip expired elements during walk",
    "id" : "2343897",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2343897"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.0",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-664",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nnetfilter: nf_tables: don't skip expired elements during walk\nThere is an asymmetry between commit/abort and preparation phase if the\nfollowing conditions are met:\n1. set is a verdict map (\"1.2.3.4 : jump foo\")\n2. timeouts are enabled\nIn this case, following sequence is problematic:\n1. element E in set S refers to chain C\n2. userspace requests removal of set S\n3. kernel does a set walk to decrement chain->use count for all elements\nfrom preparation phase\n4. kernel does another set walk to remove elements from the commit phase\n(or another walk to do a chain->use increment for all elements from\nabort phase)\nIf E has already expired in 1), it will be ignored during list walk, so its use count\nwon't have been changed.\nThen, when set is culled, ->destroy callback will zap the element via\nnf_tables_set_elem_destroy(), but this function is only safe for\nelements that have been deactivated earlier from the preparation phase:\nlack of earlier deactivate removes the element but leaks the chain use\ncount, which results in a WARN splat when the chain gets removed later,\nplus a leak of the nft_chain structure.\nUpdate pipapo_get() not to skip expired elements, otherwise flush\ncommand reports bogus ENOENT errors." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
    "release_date" : "2026-09-03T00:00:00Z",
    "advisory" : "RHSA-2026:63189",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt_els:7",
    "package" : "kernel-rt-0:3.10.0-1160.159.1.rt56.1311.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
    "release_date" : "2026-08-31T00:00:00Z",
    "advisory" : "RHSA-2026:61692",
    "cpe" : "cpe:/o:redhat:rhel_els:7",
    "package" : "kernel-0:3.10.0-1160.159.1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2024-05-22T00:00:00Z",
    "advisory" : "RHSA-2024:3138",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "kernel-0:4.18.0-553.el8_10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
    "release_date" : "2024-07-10T00:00:00Z",
    "advisory" : "RHSA-2024:4447",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.6",
    "package" : "kernel-0:4.18.0-372.111.1.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Telecommunications Update Service",
    "release_date" : "2024-07-10T00:00:00Z",
    "advisory" : "RHSA-2024:4447",
    "cpe" : "cpe:/o:redhat:rhel_tus:8.6",
    "package" : "kernel-0:4.18.0-372.111.1.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions",
    "release_date" : "2024-07-10T00:00:00Z",
    "advisory" : "RHSA-2024:4447",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.6",
    "package" : "kernel-0:4.18.0-372.111.1.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-04-30T00:00:00Z",
    "advisory" : "RHSA-2024:2394",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-427.13.1.el9_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-04-30T00:00:00Z",
    "advisory" : "RHSA-2024:2394",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-427.13.1.el9_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "release_date" : "2024-05-28T00:00:00Z",
    "advisory" : "RHSA-2024:3421",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.0",
    "package" : "kernel-0:5.14.0-70.101.1.el9_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.2 Extended Update Support",
    "release_date" : "2024-02-28T00:00:00Z",
    "advisory" : "RHSA-2024:1018",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.2",
    "package" : "kernel-0:5.14.0-284.55.1.el9_2"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 10",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:10"
  }, {
    "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 8",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-52924\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-52924\nhttps://lore.kernel.org/linux-cve-announce/2025020500-CVE-2023-52924-03d7@gregkh/T" ],
  "name" : "CVE-2023-52924",
  "csaw" : false
}