CVE-2026-23221 (GCVE-0-2026-23221)

Vulnerability from cvelistv5 – Published: 2026-02-18 14:53 – Updated: 2026-02-19 15:39
VLAI?
Title
bus: fsl-mc: fix use-after-free in driver_override_show()
Summary
In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: fix use-after-free in driver_override_show() The driver_override_show() function reads the driver_override string without holding the device_lock. However, driver_override_store() uses driver_set_override(), 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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c71dfb7833db7af652ee8f65011f14c97c47405d (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c424e72cfa67e7e1477035058a8a659f2c0ea637 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < b1983840287303e0dfb401b1b6cecc5ea7471e90 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < dd8ba8c0c3f3916d4ee1e3a09da9cd5caff5d227 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1d6bd6183e723a7b256ff34bbb5b498b5f4f2ec0 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a2ae33e1c6361e960a4d00f7cf75d880b54f9528 (git)
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    Linux Linux Unaffected: 5.15.201 , ≤ 5.15.* (semver)
Unaffected: 6.1.164 , ≤ 6.1.* (semver)
Unaffected: 6.6.127 , ≤ 6.6.* (semver)
Unaffected: 6.12.74 , ≤ 6.12.* (semver)
Unaffected: 6.18.11 , ≤ 6.18.* (semver)
Unaffected: 6.19.1 , ≤ 6.19.* (semver)
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{
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          "programFiles": [
            "drivers/bus/fsl-mc/fsl-mc-bus.c"
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        "dateUpdated": "2026-02-19T15:39:36.994Z",
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    "dateReserved": "2026-01-13T15:37:45.987Z",
    "dateUpdated": "2026-02-19T15:39:36.994Z",
    "state": "PUBLISHED"
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  }
}


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