CVE-2026-90363

CVE CVE-2026-90363EUVD EUVD-2026-82024Published 2026-09-17T16:09:06.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: drm/msm: don't tear down KMS twice when KMS init fails When priv->kms_init() (mdp4_kms_init() / mdp5_kms_init()) fails partway through, both display drivers already tear their KMS state down via mdp4_destroy() / mdp5_kms_destroy() before returning the error. The common error path in msm_drm_init() then runs msm_drm_uninit() -> msm_drm_kms_uninit(), which tries to destroy the very same KMS a second time, which causes a use-after-free crash. Bring MDP4/MDP5 in line with the DPU driver whose dpu_kms_init() doesn't perform error cleanup on the failure. Let the common path own the cleanup, instead of freeing the KMS from their error paths. The crash trace for the reference: __lock_acquire from lock_acquire (kernel/locking/lockdep.c:5906 kernel/locking/lockdep.c:5863) lock_acquire from touch_wq_lockdep_map (kernel/workqueue.c:4094 (discriminator 1)) touch_wq_lockdep_map from __flush_workqueue (kernel/workqueue.c:4136) __flush_workqueue from msm_drm_kms_uninit (drivers/gpu/drm/msm/msm_kms.c:243 (discriminator 33)) msm_drm_kms_uninit from msm_drm_uninit (drivers/gpu/drm/msm/msm_drv.c:93) msm_drm_uninit from msm_drm_init (drivers/gpu/drm/msm/msm_drv.c:184) msm_drm_init from try_to_bring_up_aggregate_device (drivers/base/component.c:249 drivers/base/component.c:227) try_to_bring_up_aggregate_device from __component_add (drivers/base/component.c:269 drivers/base/component.c:748) __component_add from dsi_host_attach (drivers/gpu/drm/msm/dsi/dsi_host.c:1739) dsi_host_attach from mipi_dsi_attach (drivers/gpu/drm/drm_mipi_dsi.c:383) mipi_dsi_attach from sharp_nt_panel_probe (drivers/gpu/drm/panel/panel-sharp-ls043t1le01.c:247) Patchwork: https://patchwork.freedesktop.org/patch/742068/

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 6.7; 506efcba31296e9cbc4f8f148eec1e4b29039931 <08827aa40f0ee9d37dcff8d6acb340b970051486; 506efcba31296e9cbc4f8f148eec1e4b29039931 <e2a99fa93b400dfbb9598103249f71969501094a; patch: 7.2.6; patch: 0; patch: 7.3-rc1; 506efcba31296e9cbc4f8f148eec1e4b29039931 <93c125e4ea98fb25f927ba5a334d85845127d667; patch: 6.18.52

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Carried in the product catalogue

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Linux — Linux

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