{"id":"CVE-2026-74617","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ndibs: initialise dibs->lock in dibs_dev_alloc()\n\ndibs->lock is initialised by dibs_dev_add(), but a dibs device can\nalready take interrupts before that call: ism_probe(…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndibs: initialise dibs->lock in dibs_dev_alloc()\n\ndibs->lock is initialised by dibs_dev_add(), but a dibs device can\nalready take interrupts before that call: ism_probe(…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","published":"2026-08-22","updated":"2026-10-14","sourceUpdated":"2026-10-14T13:10:00.187","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74617","references":[{"url":"https://git.kernel.org/stable/c/2926031acba100d0c18fcfaa7a2ed29609318848","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c27e360545373b7aee9862a5beef3b9fb3df0c25","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/fe79571f40434b257d68cbfb7b3ae93a794d8a11","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00649,"epssPercentile":0.49765,"ingestedAt":"2026-10-14T13:30:58.517Z","slug":"CVE-2026-74617","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndibs: initialise dibs->lock in dibs_dev_alloc()\n\ndibs->lock is initialised by dibs_dev_add(), but a dibs device can\nalready take interrupts before that call: ism_probe() runs\nism_dev_init(), and hence request_irq(), before it calls\ndibs_dev_add(). No client can have registered a dmb at that point, so\nno dmb interrupt can occur, but a GID event interrupt can, and\nism_handle_irq() takes dibs->lock unconditionally on entry, before it\ninspects anything else.\n\nInitialise the lock in dibs_dev_alloc() instead, so that it is valid as\nsoon as a driver can publish the device to its interrupt handler.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}