{
  "threat_severity" : "Moderate",
  "public_date" : "2025-09-15T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: md/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()",
    "id" : "2395424",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2395424"
  },
  "cvss3" : {
    "cvss3_base_score" : "5.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-366",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\nmd/raid5-cache: fix null-ptr-deref for r5l_flush_stripe_to_raid()\nr5l_flush_stripe_to_raid() will check if the list 'flushing_ios' is\nempty, and then submit 'flush_bio', however, r5l_log_flush_endio()\nis clearing the list first and then clear the bio, which will cause\nnull-ptr-deref:\nT1: submit flush io\nraid5d\nhandle_active_stripes\nr5l_flush_stripe_to_raid\n// list is empty\n// add 'io_end_ios' to the list\nbio_init\nsubmit_bio\n// io1\nT2: io1 is done\nr5l_log_flush_endio\nlist_splice_tail_init\n// clear the list\nT3: submit new flush io\n...\nr5l_flush_stripe_to_raid\n// list is empty\n// add 'io_end_ios' to the list\nbio_init\nbio_uninit\n// clear bio->bi_blkg\nsubmit_bio\n// null-ptr-deref\nFix this problem by clearing bio before clearing the list in\nr5l_log_flush_endio()." ],
  "affected_release" : [ {
    "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 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"
  } ],
  "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 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"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Fix deferred",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-53210\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53210\nhttps://lore.kernel.org/linux-cve-announce/2025091511-CVE-2023-53210-0e06@gregkh/T" ],
  "name" : "CVE-2023-53210",
  "csaw" : false
}