mfd: sm501: Fix reference leak on failed device registration
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
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.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
2.6.21
References 8
git.kernel.org
- stable/c/bbb1ecaed4ed7680e63d3a0f143f03de32de5d6e
- stable/c/e2dac91380a10e9e8d5883fb73ce9d9b390a629c
- stable/c/0baf9d43a7b7b43df2900bd8656e75b725028b6e
- stable/c/a3e340d506c1036a747fb0972aebf1063f7ef30e
- stable/c/760a1029692f1d788dc11aa636a3bf432e58b240
- stable/c/16a42c88c4667fa0bd944e438a667e059551f1f1
- stable/c/2ff8156fd500d54c61430b6834137fd0a07047ce
- stable/c/8c2f0b42fc252e1bf1c7746447091a468e784ca1