{"id":"CVE-2026-72240","title":"mfd: sm501: Fix reference leak on failed device registration","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nmfd: sm501: Fix reference leak on failed device registration\n\nWhen platform_device_register() fails in sm501_register_device(), the\nembedded struct device in pdev has a…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < bbb1ecaed4ed7680e63d3a0f143f03de32de5d6e","Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < e2dac91380a10e9e8d5883fb73ce9d9b390a629c","Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < 0baf9d43a7b7b43df2900bd8656e75b725028b6e","Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < a3e340d506c1036a747fb0972aebf1063f7ef30e","Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < 760a1029692f1d788dc11aa636a3bf432e58b240","Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < 16a42c88c4667fa0bd944e438a667e059551f1f1","Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < 2ff8156fd500d54c61430b6834137fd0a07047ce","Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < 8c2f0b42fc252e1bf1c7746447091a468e784ca1","Linux 2.6.21"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T16:53:18.473739Z"},"published":"2026-08-15","updated":"2026-11-06","sourceUpdated":"2026-11-06T16:55:23.525Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-72240","references":[{"url":"https://git.kernel.org/stable/c/bbb1ecaed4ed7680e63d3a0f143f03de32de5d6e"},{"url":"https://git.kernel.org/stable/c/e2dac91380a10e9e8d5883fb73ce9d9b390a629c"},{"url":"https://git.kernel.org/stable/c/0baf9d43a7b7b43df2900bd8656e75b725028b6e"},{"url":"https://git.kernel.org/stable/c/a3e340d506c1036a747fb0972aebf1063f7ef30e"},{"url":"https://git.kernel.org/stable/c/760a1029692f1d788dc11aa636a3bf432e58b240"},{"url":"https://git.kernel.org/stable/c/16a42c88c4667fa0bd944e438a667e059551f1f1"},{"url":"https://git.kernel.org/stable/c/2ff8156fd500d54c61430b6834137fd0a07047ce"},{"url":"https://git.kernel.org/stable/c/8c2f0b42fc252e1bf1c7746447091a468e784ca1"}],"tags":["cve.org"],"epss":0.0022,"epssPercentile":0.12549,"ingestedAt":"2026-11-06T18:00:12.585Z","slug":"CVE-2026-72240","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nmfd: sm501: Fix reference leak on failed device registration\n\nWhen platform_device_register() fails in sm501_register_device(), the\nembedded struct device in pdev has already been initialized by\ndevice_initialize(), but the failure path only reports the error and\nreturns without dropping the device reference for the current platform\ndevice:\n\n  sm501_register_device()\n    -> platform_device_register(pdev)\n       -> device_initialize(&pdev->dev)\n       -> setup_pdev_dma_masks(pdev)\n       -> platform_device_add(pdev)\n\nThis leads to a reference leak when platform_device_register() fails.\nFix this by calling platform_device_put() before returning the error.\n\nThe issue was identified by a static analysis tool I developed and\nconfirmed by manual review.\n\n## Affected\n\n- `Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < bbb1ecaed4ed7680e63d3a0f143f03de32de5d6e`\n- `Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < e2dac91380a10e9e8d5883fb73ce9d9b390a629c`\n- `Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < 0baf9d43a7b7b43df2900bd8656e75b725028b6e`\n- `Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < a3e340d506c1036a747fb0972aebf1063f7ef30e`\n- `Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < 760a1029692f1d788dc11aa636a3bf432e58b240`\n- `Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < 16a42c88c4667fa0bd944e438a667e059551f1f1`\n- `Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < 2ff8156fd500d54c61430b6834137fd0a07047ce`\n- `Linux >= b6d6454fdb66f3829af8b92ab06825b6060fdf7e < 8c2f0b42fc252e1bf1c7746447091a468e784ca1`\n- `Linux 2.6.21`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}