{"id":"CVE-2026-31485","summary":"spi: spi-fsl-lpspi: fix teardown order issue (UAF)","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nspi: spi-fsl-lpspi: fix teardown order issue (UAF)\n\nThere is a teardown order issue in the driver. The SPI controller is\nregistered using devm_spi_register_controller(), which delays\nunregistration of the SPI controller until after the fsl_lpspi_remove()\nfunction returns.\n\nAs the fsl_lpspi_remove() function synchronously tears down the DMA\nchannels, a running SPI transfer triggers the following NULL pointer\ndereference due to use after free:\n\n| fsl_lpspi 42550000.spi: I/O Error in DMA RX\n| Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000\n[...]\n| Call trace:\n|  fsl_lpspi_dma_transfer+0x260/0x340 [spi_fsl_lpspi]\n|  fsl_lpspi_transfer_one+0x198/0x448 [spi_fsl_lpspi]\n|  spi_transfer_one_message+0x49c/0x7c8\n|  __spi_pump_transfer_message+0x120/0x420\n|  __spi_sync+0x2c4/0x520\n|  spi_sync+0x34/0x60\n|  spidev_message+0x20c/0x378 [spidev]\n|  spidev_ioctl+0x398/0x750 [spidev]\n[...]\n\nSwitch from devm_spi_register_controller() to spi_register_controller() in\nfsl_lpspi_probe() and add the corresponding spi_unregister_controller() in\nfsl_lpspi_remove().","modified":"2026-07-08T08:06:21.523856418Z","published":"2026-04-22T13:54:10.892Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31485.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/15650dfbaeeb14bcaaf053b93cf631db8d465300"},{"type":"WEB","url":"https://git.kernel.org/stable/c/adb25339b66112393fd6892ceff926765feb5b86"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b341c1176f2e001b3adf0b47154fc31589f7410e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ca4483f36ac1b62e69f8b182c5b8f059e0abecfb"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d5d01f24bc6fbde40b4e567ef9160194b61267bc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e3fd54f8b0317fbccc103961ddd660f2a32dcf0b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e89e2b97253c124d37bf88e96e5e8ce5c3aeeec3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fbe6f40caeebb0b1ea9dfedc259124c1d3cda7a6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31485.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31485"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"5314987de5e5f5e38436ef4a69328bc472bbd63e"},{"fixed":"fbe6f40caeebb0b1ea9dfedc259124c1d3cda7a6"},{"fixed":"ca4483f36ac1b62e69f8b182c5b8f059e0abecfb"},{"fixed":"e3fd54f8b0317fbccc103961ddd660f2a32dcf0b"},{"fixed":"adb25339b66112393fd6892ceff926765feb5b86"},{"fixed":"d5d01f24bc6fbde40b4e567ef9160194b61267bc"},{"fixed":"e89e2b97253c124d37bf88e96e5e8ce5c3aeeec3"},{"fixed":"15650dfbaeeb14bcaaf053b93cf631db8d465300"},{"fixed":"b341c1176f2e001b3adf0b47154fc31589f7410e"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31485.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.10.0"},{"fixed":"5.10.253"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.203"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.168"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.131"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.80"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.21"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31485.json"}}],"schema_version":"1.7.5"}