firmware: arm_scmi: Avoid IDR updates while cleaning channels
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Avoid IDR updates while cleaning channels scmi_cleanup_channels() walks the TX/RX channel IDRs with idr_for_each() to free transport resources and destroy the dedicated transport devices before calling idr_destroy(). The destroy callback removed each entry from the same IDR being walked. That is not needed for this cleanup path, and it is unsafe because idr_for_each() has not advanced its radix-tree iterator while the callback is running. Removing the current entry from the callback can invalidate the iterator state. The callback also cannot be protected by rcu_read_lock(), because scmi_device_destroy() may sleep. Leave IDR teardown to the following idr_destroy() call and keep the callback limited to device destruction.
CVE-2026-93086
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-2026-93086
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": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"lessThan": "aed24a3c63920539e9de7fbfe7929a2e7c888cd2",
"versionType": "git"
},
{
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"lessThan": "431c6b872ba7fedcc5a3afb0ec3517db4d95d088",
"versionType": "git"
},
{
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"lessThan": "54e5a4f7d83db4552d963d0785be32d9df680dcd",
"versionType": "git"
},
{
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"lessThan": "bab26acebe55e8ad3ab545abda72faa7ca28c477",
"versionType": "git"
},
{
"status": "affected",
"version": "05a2801d8b90c1b5159618d4bd3a3c65d60f3ff1",
"lessThan": "c38b1e19485aaa820e52cfe162525a8af67563da",
"versionType": "git"
}
],
"programFiles": [
"drivers/firmware/arm_scmi/driver.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.3"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.3",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.110",
"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/firmware/arm_scmi/driver.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-93086
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #37821 · Revision 1
- Added to Heist Feed
- Publisher date