Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: mfd: sm501: Fix reference leak on failed device registration When platform_device_register() fails in sm501_register_device(), the embedded struct device in pdev has already been initialized by device_initialize(), but the failure path only reports the error and returns without dropping the device reference for the current platform device: sm501_register_device() -> platform_device_register(pdev) -> device_initialize(&pdev->dev) -> setup_pdev_dma_masks(pdev) -> platform_device_add(pdev) This leads to a reference leak when platform_device_register() fails. Fix this by calling platform_device_put() before returning the error. The issue was identified by a static analysis tool I developed and confirmed by manual review.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected b6d6454fdb66f3829af8b92ab06825b6060fdf7e before bbb1ecaed4ed7680e63d3a0f143f03de32de5d6e; affected b6d6454fdb66f3829af8b92ab06825b6060fdf7e before e2dac91380a10e9e8d5883fb73ce9d9b390a629c; affected b6d6454fdb66f3829af8b92ab06825b6060fdf7e before 0baf9d43a7b7b43df2900bd8656e75b725028b6e; affected b6d6454fdb66f3829af8b92ab06825b6060fdf7e before a3e340d506c1036a747fb0972aebf1063f7ef30e; affected b6d6454fdb66f3829af8b92ab06825b6060fdf7e before 760a1029692f1d788dc11aa636a3bf432e58b240; affected b6d6454fdb66f3829af8b92ab06825b6060fdf7e before 16a42c88c4667fa0bd944e438a667e059551f1f1; affected b6d6454fdb66f3829af8b92ab06825b6060fdf7e before 2ff8156fd500d54c61430b6834137fd0a07047ce; affected b6d6454fdb66f3829af8b92ab06825b6060fdf7e before 8c2f0b42fc252e1bf1c7746447091a468e784ca1 |
| Linux / Linux | affected 2.6.21; unaffected 0 before 2.6.21; unaffected 5.10.261 through 5.10.*; unaffected 5.15.212 through 5.15.*; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/bbb1ecaed4ed7680e63d3a0f143f03de32de5d6e
- https://git.kernel.org/stable/c/e2dac91380a10e9e8d5883fb73ce9d9b390a629c
- https://git.kernel.org/stable/c/0baf9d43a7b7b43df2900bd8656e75b725028b6e
- https://git.kernel.org/stable/c/a3e340d506c1036a747fb0972aebf1063f7ef30e
- https://git.kernel.org/stable/c/760a1029692f1d788dc11aa636a3bf432e58b240
- https://git.kernel.org/stable/c/16a42c88c4667fa0bd944e438a667e059551f1f1
- https://git.kernel.org/stable/c/2ff8156fd500d54c61430b6834137fd0a07047ce
- https://git.kernel.org/stable/c/8c2f0b42fc252e1bf1c7746447091a468e784ca1