{"api_version":"1","generated_at":"2026-10-21T17:39:17+00:00","cve":"CVE-2026-98496","urls":{"html":"https://cve.report/CVE-2026-98496","api":"https://cve.report/api/cve/CVE-2026-98496.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-98496","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-98496"},"summary":{"title":"net: airoha: npu: cancel wdt_work after releasing the WDT IRQ","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: airoha: npu: cancel wdt_work after releasing the WDT IRQ\n\nairoha_npu_remove() calls cancel_work_sync() on each core's wdt_work,\nbut the watchdog IRQ that queues it is requested with devm_request_irq()\nand is freed only after .remove() returns.  airoha_npu_wdt_handler() can\ntherefore schedule_work() again once the cancel has returned.  struct\nairoha_npu, which contains the work, is devm_kzalloc()'d and is freed in\nthat same unwind, so the late work dereferences freed memory.\n\nRegister the work with devm_work_autocancel() before devm_request_irq()\nand drop .remove().  Devres runs in reverse order, so the IRQ is freed\nbefore cancel_work_sync(), including when probe fails.  A cancel left in\n.remove() cannot get that order.  Initializing the work first also stops\na pending watchdog interrupt from queuing an uninitialized work item.\nProbe currently calls INIT_WORK() only after devm_request_irq().\n\nThis issue was identified during our ongoing static-analysis research\nwhile reviewing kernel code.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-10-18 16:17:00","updated_at":"2026-10-19 10:19:02"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/aca91d8fa0ecbc990ebf9a688c684dda78a43c00","name":"https://git.kernel.org/stable/c/aca91d8fa0ecbc990ebf9a688c684dda78a43c00","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4bdee8060d1e4581624e68fbd369b1afb14df4bc","name":"https://git.kernel.org/stable/c/4bdee8060d1e4581624e68fbd369b1afb14df4bc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/da9d42531f3a6dfea2e9c775b62a46185dbf280a","name":"https://git.kernel.org/stable/c/da9d42531f3a6dfea2e9c775b62a46185dbf280a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-98496","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98496","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 23290c7bc190def4e1ca61610992d9b7c32e33f3 aca91d8fa0ecbc990ebf9a688c684dda78a43c00 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 23290c7bc190def4e1ca61610992d9b7c32e33f3 da9d42531f3a6dfea2e9c775b62a46185dbf280a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 23290c7bc190def4e1ca61610992d9b7c32e33f3 4bdee8060d1e4581624e68fbd369b1afb14df4bc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.15","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.15 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.55 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.9 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/airoha/airoha_npu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"aca91d8fa0ecbc990ebf9a688c684dda78a43c00","status":"affected","version":"23290c7bc190def4e1ca61610992d9b7c32e33f3","versionType":"git"},{"lessThan":"da9d42531f3a6dfea2e9c775b62a46185dbf280a","status":"affected","version":"23290c7bc190def4e1ca61610992d9b7c32e33f3","versionType":"git"},{"lessThan":"4bdee8060d1e4581624e68fbd369b1afb14df4bc","status":"affected","version":"23290c7bc190def4e1ca61610992d9b7c32e33f3","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/airoha/airoha_npu.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.15"},{"lessThan":"6.15","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.55","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.9","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.55","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.9","versionStartIncluding":"6.15","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"6.15","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: airoha: npu: cancel wdt_work after releasing the WDT IRQ\n\nairoha_npu_remove() calls cancel_work_sync() on each core's wdt_work,\nbut the watchdog IRQ that queues it is requested with devm_request_irq()\nand is freed only after .remove() returns.  airoha_npu_wdt_handler() can\ntherefore schedule_work() again once the cancel has returned.  struct\nairoha_npu, which contains the work, is devm_kzalloc()'d and is freed in\nthat same unwind, so the late work dereferences freed memory.\n\nRegister the work with devm_work_autocancel() before devm_request_irq()\nand drop .remove().  Devres runs in reverse order, so the IRQ is freed\nbefore cancel_work_sync(), including when probe fails.  A cancel left in\n.remove() cannot get that order.  Initializing the work first also stops\na pending watchdog interrupt from queuing an uninitialized work item.\nProbe currently calls INIT_WORK() only after devm_request_irq().\n\nThis issue was identified during our ongoing static-analysis research\nwhile reviewing kernel code."}],"providerMetadata":{"dateUpdated":"2026-10-19T09:20:33.996Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/aca91d8fa0ecbc990ebf9a688c684dda78a43c00"},{"url":"https://git.kernel.org/stable/c/da9d42531f3a6dfea2e9c775b62a46185dbf280a"},{"url":"https://git.kernel.org/stable/c/4bdee8060d1e4581624e68fbd369b1afb14df4bc"}],"title":"net: airoha: npu: cancel wdt_work after releasing the WDT IRQ","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-98496","datePublished":"2026-10-18T15:16:27.545Z","dateReserved":"2026-09-25T10:25:14.353Z","dateUpdated":"2026-10-19T09:20:33.996Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-18 16:17:00","lastModifiedDate":"2026-10-19 10:19:02","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"98496","Ordinal":"1","Title":"net: airoha: npu: cancel wdt_work after releasing the WDT IRQ","CVE":"CVE-2026-98496","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"98496","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: airoha: npu: cancel wdt_work after releasing the WDT IRQ\n\nairoha_npu_remove() calls cancel_work_sync() on each core's wdt_work,\nbut the watchdog IRQ that queues it is requested with devm_request_irq()\nand is freed only after .remove() returns.  airoha_npu_wdt_handler() can\ntherefore schedule_work() again once the cancel has returned.  struct\nairoha_npu, which contains the work, is devm_kzalloc()'d and is freed in\nthat same unwind, so the late work dereferences freed memory.\n\nRegister the work with devm_work_autocancel() before devm_request_irq()\nand drop .remove().  Devres runs in reverse order, so the IRQ is freed\nbefore cancel_work_sync(), including when probe fails.  A cancel left in\n.remove() cannot get that order.  Initializing the work first also stops\na pending watchdog interrupt from queuing an uninitialized work item.\nProbe currently calls INIT_WORK() only after devm_request_irq().\n\nThis issue was identified during our ongoing static-analysis research\nwhile reviewing kernel code.","Type":"Description","Title":"net: airoha: npu: cancel wdt_work after releasing the WDT IRQ"}]}}}