drm/msm: don't tear down KMS twice when KMS init fails
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 (dri
CVE-2026-90363
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-90363
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"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"
}
],
"programFiles": [
"drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c",
"drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.7"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.7",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.52",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.6",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c",
"drivers/gpu/drm/msm/disp/mdp5/mdp5_kms.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-90363
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48677 · Revision 1
- Added to Heist Feed
- Publisher date