{"id":"CVE-2026-90363","title":"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 te…","summary":"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 te…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 506efcba31296e9cbc4f8f148eec1e4b29039931 < 08827aa40f0ee9d37dcff8d6acb340b970051486","Linux >= 506efcba31296e9cbc4f8f148eec1e4b29039931 < e2a99fa93b400dfbb9598103249f71969501094a","Linux >= 506efcba31296e9cbc4f8f148eec1e4b29039931 < 93c125e4ea98fb25f927ba5a334d85845127d667","Linux 6.7"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:35.353","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90363","references":[{"url":"https://git.kernel.org/stable/c/08827aa40f0ee9d37dcff8d6acb340b970051486","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/93c125e4ea98fb25f927ba5a334d85845127d667","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e2a99fa93b400dfbb9598103249f71969501094a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.811Z","epss":0.00198,"epssPercentile":0.09869,"slug":"CVE-2026-90363","body":"## Overview\n\nIn 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/\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}