{"id":"CVE-2026-31759","state":"PUBLISHED","title":"usb: ulpi: fix double free in ulpi_register_interface() error path","description":"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 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().","publishedAt":"2026-05-01T14:14:51.895Z","updatedAt":"2026-05-11T22:15:15.896Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"2f70ba9dae13a190673cc3f9b4aad52179738f60","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"ee248e6e941e4f2e634df2bd43e5f1ef810ab6df","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"272a9b26c336a295e4e209157fed809706c1b1f7","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"aaeae6533d77e6ed4def85baec01e2815ebbef61","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"8763f8317bb389aded32a32b08f6751cfff657d2","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"38c28fe25611099230f0965c925499bfcf46a795","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"a6e5461f076c2ef63159f18e5cdbd30b50f0bc15","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"01af542392b5d41fd659d487015a71f627accce3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/common/ulpi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.2","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.168","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.134","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.81","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.22","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.12","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/common/ulpi.c"]}],"references":["https://git.kernel.org/stable/c/2f70ba9dae13a190673cc3f9b4aad52179738f60","https://git.kernel.org/stable/c/ee248e6e941e4f2e634df2bd43e5f1ef810ab6df","https://git.kernel.org/stable/c/272a9b26c336a295e4e209157fed809706c1b1f7","https://git.kernel.org/stable/c/aaeae6533d77e6ed4def85baec01e2815ebbef61","https://git.kernel.org/stable/c/8763f8317bb389aded32a32b08f6751cfff657d2","https://git.kernel.org/stable/c/38c28fe25611099230f0965c925499bfcf46a795","https://git.kernel.org/stable/c/a6e5461f076c2ef63159f18e5cdbd30b50f0bc15","https://git.kernel.org/stable/c/01af542392b5d41fd659d487015a71f627accce3"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/31xxx/CVE-2026-31759.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31759","state":"PUBLISHED","datePublished":"2026-05-01T14:14:51.895Z","dateUpdated":"2026-05-11T22:15:15.896Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-03-09T15:48:24.139Z"},"containers":{"cna":{"title":"usb: ulpi: fix double free in ulpi_register_interface() error path","descriptions":[{"lang":"en","value":"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 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()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"2f70ba9dae13a190673cc3f9b4aad52179738f60","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"ee248e6e941e4f2e634df2bd43e5f1ef810ab6df","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"272a9b26c336a295e4e209157fed809706c1b1f7","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"aaeae6533d77e6ed4def85baec01e2815ebbef61","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"8763f8317bb389aded32a32b08f6751cfff657d2","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"38c28fe25611099230f0965c925499bfcf46a795","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"a6e5461f076c2ef63159f18e5cdbd30b50f0bc15","versionType":"git"},{"version":"289fcff4bcdb1dcc0ce8788b7ea0f58a9e4a495f","status":"affected","lessThan":"01af542392b5d41fd659d487015a71f627accce3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/common/ulpi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.2","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.168","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.134","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.81","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.22","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.12","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/usb/common/ulpi.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:15:15.896Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.1.168"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.6.134"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.12.81"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.18.22"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"6.19.12"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}