{"id":"CVE-2026-31487","state":"PUBLISHED","title":"spi: use generic driver_override infrastructure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nspi: use generic driver_override infrastructure\n\nWhen a driver is probed through __driver_attach(), the bus' match()\ncallback is called without the device lock held, thus accessing the\ndriver_override field without a lock, which can cause a UAF.\n\nFix this by using the driver-core driver_override infrastructure taking\ncare of proper locking internally.\n\nNote that calling match() from __driver_attach() without the device lock\nheld is intentional. [1]\n\nAlso note that we do not enable the driver_override feature of struct\nbus_type, as SPI - in contrast to most other buses - passes \"\" to\nsysfs_emit() when the driver_override pointer is NULL. Thus, printing\n\"\\n\" instead of \"(null)\\n\".","publishedAt":"2026-04-22T13:54:12.290Z","updatedAt":"2026-10-21T12:39:19.125Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5039563e7c25eccd7fec1de6706011009d1c5665","status":"affected","lessThan":"6e8eb467bed6aa1a563dba8f366c9fd76ba0004e","versionType":"git"},{"version":"5039563e7c25eccd7fec1de6706011009d1c5665","status":"affected","lessThan":"eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0","versionType":"git"},{"version":"5039563e7c25eccd7fec1de6706011009d1c5665","status":"affected","lessThan":"c73a58661a760373d08a6883af4f0bb5cc991a67","versionType":"git"},{"version":"5039563e7c25eccd7fec1de6706011009d1c5665","status":"affected","lessThan":"e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0","versionType":"git"},{"version":"5039563e7c25eccd7fec1de6706011009d1c5665","status":"affected","lessThan":"cc34d77dd48708d810c12bfd6f5bf03304f6c824","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/spi/spi.c","include/linux/spi/spi.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.20","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.80","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.21","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.11","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/spi/spi.c","include/linux/spi/spi.h"]}],"references":["https://git.kernel.org/stable/c/6e8eb467bed6aa1a563dba8f366c9fd76ba0004e","https://git.kernel.org/stable/c/eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0","https://git.kernel.org/stable/c/c73a58661a760373d08a6883af4f0bb5cc991a67","https://git.kernel.org/stable/c/e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0","https://git.kernel.org/stable/c/cc34d77dd48708d810c12bfd6f5bf03304f6c824"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/31xxx/CVE-2026-31487.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-31487","state":"PUBLISHED","datePublished":"2026-04-22T13:54:12.290Z","dateUpdated":"2026-10-21T12:39:19.125Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-03-09T15:48:24.101Z"},"containers":{"cna":{"title":"spi: use generic driver_override infrastructure","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nspi: use generic driver_override infrastructure\n\nWhen a driver is probed through __driver_attach(), the bus' match()\ncallback is called without the device lock held, thus accessing the\ndriver_override field without a lock, which can cause a UAF.\n\nFix this by using the driver-core driver_override infrastructure taking\ncare of proper locking internally.\n\nNote that calling match() from __driver_attach() without the device lock\nheld is intentional. [1]\n\nAlso note that we do not enable the driver_override feature of struct\nbus_type, as SPI - in contrast to most other buses - passes \"\" to\nsysfs_emit() when the driver_override pointer is NULL. Thus, printing\n\"\\n\" instead of \"(null)\\n\"."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"5039563e7c25eccd7fec1de6706011009d1c5665","status":"affected","lessThan":"6e8eb467bed6aa1a563dba8f366c9fd76ba0004e","versionType":"git"},{"version":"5039563e7c25eccd7fec1de6706011009d1c5665","status":"affected","lessThan":"eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0","versionType":"git"},{"version":"5039563e7c25eccd7fec1de6706011009d1c5665","status":"affected","lessThan":"c73a58661a760373d08a6883af4f0bb5cc991a67","versionType":"git"},{"version":"5039563e7c25eccd7fec1de6706011009d1c5665","status":"affected","lessThan":"e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0","versionType":"git"},{"version":"5039563e7c25eccd7fec1de6706011009d1c5665","status":"affected","lessThan":"cc34d77dd48708d810c12bfd6f5bf03304f6c824","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/spi/spi.c","include/linux/spi/spi.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.20","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.80","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.21","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.11","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/spi/spi.c","include/linux/spi/spi.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/6e8eb467bed6aa1a563dba8f366c9fd76ba0004e"},{"url":"https://git.kernel.org/stable/c/eedf220442d13b6d97294e5b0ac8a2c38ee1a1a0"},{"url":"https://git.kernel.org/stable/c/c73a58661a760373d08a6883af4f0bb5cc991a67"},{"url":"https://git.kernel.org/stable/c/e0ae367a2de06c49aa1de6ec9b1ab6860bbb2cf0"},{"url":"https://git.kernel.org/stable/c/cc34d77dd48708d810c12bfd6f5bf03304f6c824"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:39:19.125Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.12.80"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.18.21"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.19.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}