{"cve":"CVE-2026-31485","nvd":{"published":"2026-04-22T14:16:45.923","modified":"2026-10-15T02:19:07.593","status":"Modified","description":"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().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/15650dfbaeeb14bcaaf053b93cf631db8d465300","https://git.kernel.org/stable/c/adb25339b66112393fd6892ceff926765feb5b86","https://git.kernel.org/stable/c/b341c1176f2e001b3adf0b47154fc31589f7410e","https://git.kernel.org/stable/c/ca4483f36ac1b62e69f8b182c5b8f059e0abecfb","https://git.kernel.org/stable/c/d5d01f24bc6fbde40b4e567ef9160194b61267bc"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:30:49.762551342+00:00"},"epss":{"cve":"CVE-2026-31485","score":0.00131,"percentile":0.02694,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}