firmware: arm_scmi: Fix SCMI device destroy lifetimes
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix SCMI device destroy lifetimes scmi_child_dev_find() drops the reference returned by device_find_child() before returning the scmi_device pointer. A concurrent unregister can then release the device while the destroy path is still using the returned pointer. Make the lookup helper return the device_find_child() reference and keep it until scmi_device_destroy() has finished unregistering the child. Also split device_unregister() in __scmi_device_destroy() so the SCMI bus ID is not made reusable until after device_del() has removed the old scmi_dev.N name from sysfs. This avoids a new SCMI device reusing the same ID while the old device is still registered. The final device release callback is also a possible cleanup path when SCMI children are deleted by driver core recursion rather than __scmi_device_destroy(). Release the SCMI bus ID from a common helper used by destroy, register-failure and final-release paths, and clear scmi_dev->id after freeing it so the final release cannot free the same ID again.
CVE-2026-93081
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-2026-93081
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": "2fbf6c9695ad9f05e7e5c166bf43fac7cb3276b3",
"lessThan": "d8ecdceeb90cd2c265b222a7b65487faf68fea73",
"versionType": "git"
},
{
"status": "affected",
"version": "969d8beaa2e374387bf9aa5602ef84fc50bb48d8",
"lessThan": "916e27f71a80f6d77c48d1a1a5782d6d5ef9017c",
"versionType": "git"
},
{
"status": "affected",
"version": "9ca67840c0ddf3f39407339624cef824a4f27599",
"lessThan": "a60bc2df2d323cc1342f0cf95563cae266801e20",
"versionType": "git"
},
{
"status": "affected",
"version": "9ca67840c0ddf3f39407339624cef824a4f27599",
"lessThan": "c59b3393df1348a12308aaabd5fbc58ed6b21cf5",
"versionType": "git"
},
{
"status": "affected",
"version": "9ca67840c0ddf3f39407339624cef824a4f27599",
"lessThan": "6abe8fe36b29ff51d1a42c2f338972883f4751a5",
"versionType": "git"
},
{
"status": "affected",
"version": "91ff1e9652fb9beb0174267d6bb38243dff211bb",
"versionType": "git"
},
{
"status": "affected",
"version": "ff4273d47da81b95ed9396110bcbd1b7b7470fe8",
"versionType": "git"
},
{
"status": "affected",
"version": "8a8a3547d5c4960da053df49c75bf623827a25da",
"versionType": "git"
},
{
"status": "affected",
"version": "6.6.90",
"lessThan": "6.6.160",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.12.28",
"lessThan": "6.12.114",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.182",
"lessThan": "5.16",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.138",
"lessThan": "6.2",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.14.6",
"lessThan": "6.15",
"versionType": "semver"
}
],
"programFiles": [
"drivers/firmware/arm_scmi/bus.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.15"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.15",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.160",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.114",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.57",
"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/firmware/arm_scmi/bus.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93081
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #48705 · Revision 1
- Added to Heist Feed
- Publisher date