{"id":"CVE-2026-90363","revision":"f8e9c5e76288452d87334f49a81ae807","records":[{"revision":"f8e9c5e76288452d87334f49a81ae807","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-90363","aliases":[],"title":"drm/msm: don't tear down KMS twice when KMS init fails","description":"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/","state":0,"publishedAt":"2026-09-17T16:09:06.817+00:00","modifiedAt":"2026-10-21T12:51:17.907+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c\",\n                        \"drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"506efcba31296e9cbc4f8f148eec1e4b29039931\",\n                            \"lessThan\": \"54437ace956dc7b758c0219d6f76654b3ead8d69\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"506efcba31296e9cbc4f8f148eec1e4b29039931\",\n                            \"lessThan\": \"08827aa40f0ee9d37dcff8d6acb340b970051486\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"506efcba31296e9cbc4f8f148eec1e4b29039931\",\n                            \"lessThan\": \"e2a99fa93b400dfbb9598103249f71969501094a\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"506efcba31296e9cbc4f8f148eec1e4b29039931\",\n                            \"lessThan\": \"93c125e4ea98fb25f927ba5a334d85845127d667\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c\",\n                        \"drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.7\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.52\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.6\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/54437ace956dc7b758c0219d6f76654b3ead8d69","https://git.kernel.org/stable/c/08827aa40f0ee9d37dcff8d6acb340b970051486","https://git.kernel.org/stable/c/e2a99fa93b400dfbb9598103249f71969501094a","https://git.kernel.org/stable/c/93c125e4ea98fb25f927ba5a334d85845127d667"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-90363","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-90363","identifiers":["CVE-2026-90363"]},"retained":false,"historicalAffected":[]}],"coverage":[]}