{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-90144", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.789Z", "datePublished": "2026-09-17T16:06:40.413Z", "dateUpdated": "2026-10-21T12:50:03.630Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-21T12:50:03.630Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndpll: fix NULL deref in dpll_device_ops() during teardown race\n\nWhen the last owner of a dpll device unregisters while a foreign driver\nstill holds a pin on it via dpll_pin_on_pin_register(), the dpll object\nstays alive with an empty registration list. A pin notification queued\nbefore the unregister (e.g. ice reacting to zl3073x_i2c removal) then\nwalks pin->dpll_refs into dpll_device_ops(), which trips the WARN_ON and\ndereferences the missing registration. dpll_lock cannot help because the\nnotification work was queued before the unregistering driver took the\nlock.\n\nTreat the empty registration list as a legitimate transient state. Make\ndpll_priv() and dpll_device_ops() return NULL in that case and make\nevery pin netlink path that resolves a device from a pin skip such\ndplls. dpll_cmd_pin_get_one() picks a ref with a live registration and\nreturns -ENODEV when there is none, the pin dumpit skips such a pin\ninstead of aborting the dump, dpll_msg_add_pin_dplls() and the\nfrequency, esync, reference sync and phase adjust set paths skip dead\nrefs, and dpll_pin_parent_device_set() validates the parent with\ndpll_device_get_by_id(). dpll_pin_register() is the last caller that\ndereferenced the device ops without a check, so move its frequency\nmonitor validation under dpll_lock and tolerate a missing registration\nthere as well.\n\nThe empty registration list is equivalent to a cleared DPLL_REGISTERED\nmark, both transitions happen under dpll_lock in dpll_device_register()\nand dpll_device_unregister(). A pin notification for a pin whose dplls\nare all gone is now dropped with -ENODEV instead of crashing, all\ncallers in the core ignore that return value.\n\n WARNING: drivers/dpll/dpll_core.c:1092 at dpll_device_ops+0x24/0x40,\n CPU#83: kworker/u576:3/23471\n Modules linked in: ... ice ... zl3073x_i2c(-) ... zl3073x ...\n Workqueue: ice_dpll_wq ice_dpll_pin_notify_work [ice]\n RIP: 0010:dpll_device_ops+0x24/0x40\n Call Trace:\n \n dpll_cmd_pin_get_one+0x336/0x520\n dpll_pin_event_send+0x82/0x140\n dpll_pin_on_pin_unregister+0xbb/0x160\n ice_dpll_pin_notify_work+0x1bc/0x1f0 [ice]\n process_one_work+0x19e/0x370\n worker_thread+0x1a6/0x310\n kthread+0xe4/0x120\n ret_from_fork+0x1a1/0x270\n ret_from_fork_asm+0x1a/0x30\n \n ---[ end trace 0000000000000000 ]---\n BUG: kernel NULL pointer dereference, address: 0000000000000010\n #PF: supervisor read access in kernel mode\n #PF: error_code(0x0000) - not-present page" } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/dpll/dpll_core.c", "drivers/dpll/dpll_netlink.c" ], "versions": [ { "version": "9431063ad323ac864750aeba4d304389bc42ca4e", "lessThan": "7d9661d6ef60bee705a3bb220dc59f10d9155c31", "status": "affected", "versionType": "git" }, { "version": "9431063ad323ac864750aeba4d304389bc42ca4e", "lessThan": "d39da3ff8d39c31761bf1698bc02a5a206722136", "status": "affected", "versionType": "git" }, { "version": "9431063ad323ac864750aeba4d304389bc42ca4e", "lessThan": "fdbf04e3e01a872d0ef2149f846f1a3e3cb54f5b", "status": "affected", "versionType": "git" }, { "version": "9431063ad323ac864750aeba4d304389bc42ca4e", "lessThan": "33f016b23a219fe034213849b51436b8e79df251", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/dpll/dpll_core.c", "drivers/dpll/dpll_netlink.c" ], "versions": [ { "version": "6.7", "status": "affected" }, { "version": "0", "lessThan": "6.7", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.114", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.57", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.6", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.12.114" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "6.18.57" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.2.6" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.7", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/7d9661d6ef60bee705a3bb220dc59f10d9155c31" }, { "url": "https://git.kernel.org/stable/c/d39da3ff8d39c31761bf1698bc02a5a206722136" }, { "url": "https://git.kernel.org/stable/c/fdbf04e3e01a872d0ef2149f846f1a3e3cb54f5b" }, { "url": "https://git.kernel.org/stable/c/33f016b23a219fe034213849b51436b8e79df251" } ], "title": "dpll: fix NULL deref in dpll_device_ops() during teardown race", "x_generator": { "engine": "bippy-1.2.0" } } } }