CVE-2026-23221

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Source
https://cve.org/CVERecord?id=CVE-2026-23221
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23221.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-23221
Downstream
Related
Published
2026-02-18T14:53:24.391Z
Modified
2026-03-27T08:59:24.438765Z
Summary
bus: fsl-mc: fix use-after-free in driver_override_show()
Details

In the Linux kernel, the following vulnerability has been resolved:

bus: fsl-mc: fix use-after-free in driveroverrideshow()

The driveroverrideshow() function reads the driveroverride string without holding the devicelock. However, driveroverridestore() uses driversetoverride(), which modifies and frees the string while holding the device_lock.

This can result in a concurrent use-after-free if the string is freed by the store function while being read by the show function.

Fix this by holding the device_lock around the read operation.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23221.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
1f86a00c1159fd77e66b1bd6ff1a183f4d46f34d
Fixed
c71dfb7833db7af652ee8f65011f14c97c47405d
Fixed
c424e72cfa67e7e1477035058a8a659f2c0ea637
Fixed
b1983840287303e0dfb401b1b6cecc5ea7471e90
Fixed
dd8ba8c0c3f3916d4ee1e3a09da9cd5caff5d227
Fixed
1d6bd6183e723a7b256ff34bbb5b498b5f4f2ec0
Fixed
a2ae33e1c6361e960a4d00f7cf75d880b54f9528
Fixed
148891e95014b5dc5878acefa57f1940c281c431

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23221.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.10.0
Fixed
5.15.201
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.164
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.127
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.74
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.11
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23221.json"