{
  "threat_severity" : "Low",
  "public_date" : "2024-04-04T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: iommufd: Fix iopt_access_list_id overwrite bug",
    "id" : "2273459",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2273459"
  },
  "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" : "verified"
  },
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\niommufd: Fix iopt_access_list_id overwrite bug\nSyzkaller reported the following WARN_ON:\nWARNING: CPU: 1 PID: 4738 at drivers/iommu/iommufd/io_pagetable.c:1360\nCall Trace:\niommufd_access_change_ioas+0x2fe/0x4e0\niommufd_access_destroy_object+0x50/0xb0\niommufd_object_remove+0x2a3/0x490\niommufd_object_destroy_user\niommufd_access_destroy+0x71/0xb0\niommufd_test_staccess_release+0x89/0xd0\n__fput+0x272/0xb50\n__fput_sync+0x4b/0x60\n__do_sys_close\n__se_sys_close\n__x64_sys_close+0x8b/0x110\ndo_syscall_x64\nThe mismatch between the access pointer in the list and the passed-in\npointer is resulting from an overwrite of access->iopt_access_list_id, in\niopt_add_access(). Called from iommufd_access_change_ioas() when\nxa_alloc() succeeds but iopt_calculate_iova_alignment() fails.\nAdd a new_id in iopt_add_access() and only update iopt_access_list_id when\nreturning successfully.", "In the Linux kernel, the following vulnerability has been resolved:\niommufd: Fix iopt_access_list_id overwrite bug\nThe Linux kernel CVE team has assigned CVE-2024-26786 to this issue.\nUpstream advisory:\nhttps://lore.kernel.org/linux-cve-announce/2024040459-CVE-2024-26786-802f@gregkh/T" ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-11-12T00:00:00Z",
    "advisory" : "RHSA-2024:9315",
    "cpe" : "cpe:/a:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-503.11.1.el9_5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-11-12T00:00:00Z",
    "advisory" : "RHSA-2024:9315",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "kernel-0:5.14.0-503.11.1.el9_5"
  } ],
  "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"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "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" : "Affected",
    "package_name" : "kernel-rt",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2024-26786\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26786\nhttps://lore.kernel.org/linux-cve-announce/2024040459-CVE-2024-26786-802f@gregkh/T" ],
  "name" : "CVE-2024-26786",
  "csaw" : false
}