{
  "threat_severity" : "Low",
  "public_date" : "2025-09-17T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: Linux kernel: Denial of Service in DRM scheduler due to improper work queue handling",
    "id" : "2396115",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2396115"
  },
  "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"
  },
  "cwe" : "CWE-909",
  "details" : [ "In the Linux kernel, the following vulnerability has been resolved:\ndrm/sched: Check scheduler work queue before calling timeout handling\nDuring an IGT GPU reset test we see again oops despite of\ncommit 0c8c901aaaebc9 (drm/sched: Check scheduler ready before calling\ntimeout handling).\nIt uses ready condition whether to call drm_sched_fault which unwind\nthe TDR leads to GPU reset.\nHowever it looks the ready condition is overloaded with other meanings,\nfor example, for the following stack is related GPU reset :\n0  gfx_v9_0_cp_gfx_start\n1  gfx_v9_0_cp_gfx_resume\n2  gfx_v9_0_cp_resume\n3  gfx_v9_0_hw_init\n4  gfx_v9_0_resume\n5  amdgpu_device_ip_resume_phase2\ndoes the following:\n/* start the ring */\ngfx_v9_0_cp_gfx_start(adev);\nring->sched.ready = true;\nThe same approach is for other ASICs as well :\ngfx_v8_0_cp_gfx_resume\ngfx_v10_0_kiq_resume, etc...\nAs a result, our GPU reset test causes GPU fault which calls unconditionally gfx_v9_0_fault\nand then drm_sched_fault. However now it depends on whether the interrupt service routine\ndrm_sched_fault is executed after gfx_v9_0_cp_gfx_start is completed which sets the ready\nfield of the scheduler to true even  for uninitialized schedulers and causes oops vs\nno fault or when ISR  drm_sched_fault is completed prior  gfx_v9_0_cp_gfx_start and\nNULL pointer dereference does not occur.\nUse the field timeout_wq  to prevent oops for uninitialized schedulers.\nThe field could be initialized by the work queue of resetting the domain.\nv1: Corrections to commit message (Luben)", "A flaw was found in the Linux kernel's Direct Rendering Manager (DRM) scheduler. A local attacker with low privileges could exploit this vulnerability by triggering a GPU reset test. This improper handling of the scheduler work queue can lead to a kernel panic, which is a system crash, resulting in a Denial of Service (DoS)." ],
  "affected_release" : [ {
    "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" : "Fix deferred",
    "package_name" : "kernel",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Fix deferred",
    "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-2023-53351\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-53351\nhttps://lore.kernel.org/linux-cve-announce/2025091720-CVE-2023-53351-7b67@gregkh/T" ],
  "name" : "CVE-2023-53351",
  "csaw" : false
}