CVE-2026-90363

{
  "id": "CVE-2026-90363",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-17T17:17:35.353",
  "lastModified": "2026-10-21T13:20:52.447",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: don't tear down KMS twice when KMS init fails\n\nWhen priv->kms_init() (mdp4_kms_init() / mdp5_kms_init()) fails partway\nthrough, both display drivers already tear their KMS state down via\nmdp4_destroy() / mdp5_kms_destroy() before returning the error. The\ncommon error path in msm_drm_init() then runs msm_drm_uninit() ->\nmsm_drm_kms_uninit(), which tries to destroy the very same KMS a second\ntime, which causes a use-after-free crash.\n\nBring MDP4/MDP5 in line with the DPU driver whose dpu_kms_init() doesn't\nperform error cleanup on the failure. Let the common path own the\ncleanup, instead of freeing the KMS from their error paths.\n\nThe crash trace for the reference:\n\n  __lock_acquire from lock_acquire (kernel/locking/lockdep.c:5906 kernel/locking/lockdep.c:5863)\n  lock_acquire from touch_wq_lockdep_map (kernel/workqueue.c:4094 (discriminator 1))\n  touch_wq_lockdep_map from __flush_workqueue (kernel/workqueue.c:4136)\n  __flush_workqueue from msm_drm_kms_uninit (drivers/gpu/drm/msm/msm_kms.c:243 (discriminator 33))\n  msm_drm_kms_uninit from msm_drm_uninit (drivers/gpu/drm/msm/msm_drv.c:93)\n  msm_drm_uninit from msm_drm_init (drivers/gpu/drm/msm/msm_drv.c:184)\n  msm_drm_init from try_to_bring_up_aggregate_device (drivers/base/component.c:249 drivers/base/component.c:227)\n  try_to_bring_up_aggregate_device from __component_add (drivers/base/component.c:269 drivers/base/component.c:748)\n  __component_add from dsi_host_attach (drivers/gpu/drm/msm/dsi/dsi_host.c:1739)\n  dsi_host_attach from mipi_dsi_attach (drivers/gpu/drm/drm_mipi_dsi.c:383)\n  mipi_dsi_attach from sharp_nt_panel_probe (drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c:247)\n\nPatchwork: https://patchwork.freedesktop.org/patch/742068/"
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c",
            "drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "506efcba31296e9cbc4f8f148eec1e4b29039931",
              "lessThan": "54437ace956dc7b758c0219d6f76654b3ead8d69",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "506efcba31296e9cbc4f8f148eec1e4b29039931",
              "lessThan": "08827aa40f0ee9d37dcff8d6acb340b970051486",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "506efcba31296e9cbc4f8f148eec1e4b29039931",
              "lessThan": "e2a99fa93b400dfbb9598103249f71969501094a",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "506efcba31296e9cbc4f8f148eec1e4b29039931",
              "lessThan": "93c125e4ea98fb25f927ba5a334d85845127d667",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c",
            "drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.7",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.7",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.114",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.52",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.6",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/08827aa40f0ee9d37dcff8d6acb340b970051486",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/54437ace956dc7b758c0219d6f76654b3ead8d69",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/93c125e4ea98fb25f927ba5a334d85845127d667",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e2a99fa93b400dfbb9598103249f71969501094a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}