{"id":"CVE-2026-31759","title":"usb: ulpi: fix double free in ulpi_register_interface() error path","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: ulpi: fix double free in ulpi_register_interface() error path\n\nWhen device_register() fails, ulpi_register() calls put_device() on\nulpi->dev.\n\nThe device release c…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < 2f70ba9dae13a190673cc3f9b4aad52179738f60","Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < ee248e6e941e4f2e634df2bd43e5f1ef810ab6df","Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < 272a9b26c336a295e4e209157fed809706c1b1f7","Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < aaeae6533d77e6ed4def85baec01e2815ebbef61","Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < 8763f8317bb389aded32a32b08f6751cfff657d2","Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < 38c28fe25611099230f0965c925499bfcf46a795","Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < a6e5461f076c2ef63159f18e5cdbd30b50f0bc15","Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < 01af542392b5d41fd659d487015a71f627accce3","Linux 4.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-06T15:24:54.410524Z"},"published":"2026-05-01","updated":"2026-11-06","sourceUpdated":"2026-11-06T15:32:24.202Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-31759","references":[{"url":"https://git.kernel.org/stable/c/2f70ba9dae13a190673cc3f9b4aad52179738f60"},{"url":"https://git.kernel.org/stable/c/ee248e6e941e4f2e634df2bd43e5f1ef810ab6df"},{"url":"https://git.kernel.org/stable/c/272a9b26c336a295e4e209157fed809706c1b1f7"},{"url":"https://git.kernel.org/stable/c/aaeae6533d77e6ed4def85baec01e2815ebbef61"},{"url":"https://git.kernel.org/stable/c/8763f8317bb389aded32a32b08f6751cfff657d2"},{"url":"https://git.kernel.org/stable/c/38c28fe25611099230f0965c925499bfcf46a795"},{"url":"https://git.kernel.org/stable/c/a6e5461f076c2ef63159f18e5cdbd30b50f0bc15"},{"url":"https://git.kernel.org/stable/c/01af542392b5d41fd659d487015a71f627accce3"}],"tags":["cve.org"],"epss":0.00129,"epssPercentile":0.02592,"ingestedAt":"2026-11-06T15:54:04.050Z","slug":"CVE-2026-31759","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nusb: ulpi: fix double free in ulpi_register_interface() error path\n\nWhen device_register() fails, ulpi_register() calls put_device() on\nulpi->dev.\n\nThe device release callback ulpi_dev_release() drops the OF node\nreference and frees ulpi, but the current error path in\nulpi_register_interface() then calls kfree(ulpi) again, causing a\ndouble free.\n\nLet put_device() handle the cleanup through ulpi_dev_release() and\navoid freeing ulpi again in ulpi_register_interface().\n\n## Affected\n\n- `Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < 2f70ba9dae13a190673cc3f9b4aad52179738f60`\n- `Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < ee248e6e941e4f2e634df2bd43e5f1ef810ab6df`\n- `Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < 272a9b26c336a295e4e209157fed809706c1b1f7`\n- `Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < aaeae6533d77e6ed4def85baec01e2815ebbef61`\n- `Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < 8763f8317bb389aded32a32b08f6751cfff657d2`\n- `Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < 38c28fe25611099230f0965c925499bfcf46a795`\n- `Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < a6e5461f076c2ef63159f18e5cdbd30b50f0bc15`\n- `Linux >= 289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f < 01af542392b5d41fd659d487015a71f627accce3`\n- `Linux 4.2`\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":[]}