{"id":"CVE-2026-89993","summary":"dmaengine: dw-edma: Initialize IRQ data before requesting IRQs","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dw-edma: Initialize IRQ data before requesting IRQs\n\ndw_edma_irq_request() passes struct dw_edma_irq to request_irq() before\ndw_edma_channel_setup() fills the back pointer. A shared interrupt can\ntherefore enter the handler with dw_irq-\u003edw still NULL, leading to a\nNULL pointer dereference.\n\nSet the back pointer before installing each handler.","modified":"2026-09-17T03:47:20.439625095Z","published":"2026-09-16T10:33:06.611Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89993.json"},"references":[{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"},{"type":"WEB","url":"https://git.kernel.org/stable/c/07e50cef557def076418c67051a336e4c6bd50e1"},{"type":"WEB","url":"https://git.kernel.org/stable/c/17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba"},{"type":"WEB","url":"https://git.kernel.org/stable/c/647217abea849d3d45f8cb0b8ee5b78d50f26985"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b86280b12ccf33b68b309b7cb0e4476894dfe77c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d232bc6cf4562132ef50644484dfd4b23a593295"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d91fb6c0d10dad32929dc5c6850f89df34e1bfcd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fac202d73e7a649b7d4010325c6c6dcd9334fe65"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89993.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89993"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf"},{"fixed":"b86280b12ccf33b68b309b7cb0e4476894dfe77c"},{"fixed":"07e50cef557def076418c67051a336e4c6bd50e1"},{"fixed":"17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba"},{"fixed":"d232bc6cf4562132ef50644484dfd4b23a593295"},{"fixed":"fac202d73e7a649b7d4010325c6c6dcd9334fe65"},{"fixed":"d91fb6c0d10dad32929dc5c6850f89df34e1bfcd"},{"fixed":"647217abea849d3d45f8cb0b8ee5b78d50f26985"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89993.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.3.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.51"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89993.json"}}],"schema_version":"1.9.0"}