{"api_version":"1","generated_at":"2026-09-26T03:42:40+00:00","cve":"CVE-2026-93815","urls":{"html":"https://cve.report/CVE-2026-93815","api":"https://cve.report/api/cve/CVE-2026-93815.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93815","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93815"},"summary":{"title":"net: au1000: move free_irq out of the close-time spinlocked section","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: au1000: move free_irq out of the close-time spinlocked section\n\nau1000_close() calls free_irq() while aup->lock is still held with\nspin_lock_irqsave(). free_irq() can sleep because it takes the IRQ\ndescriptor request mutex, so it does not belong inside the close-time\nspinlocked section.\n\nThis was found by our static analysis tool and then confirmed by manual\nreview of the in-tree au1000_close() .ndo_stop path. The reviewed path\nkeeps aup->lock held across the MAC reset, queue stop and\nfree_irq(dev->irq, dev).\n\nA directed runtime validation kept that ndo_stop carrier and the same\nfree_irq(dev->irq, dev) operation under the driver lock. Lockdep reported\n\"BUG: sleeping function called from invalid context\" and \"Invalid wait\ncontext\" while free_irq() was taking desc->request_mutex, with\nau1000_close() and free_irq() on the stack.\n\nDrop aup->lock before freeing the IRQ. The protected close-time work still\nstops the device and queue before IRQ teardown, but the sleepable IRQ core\npath now runs outside the spinlocked section.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-24 17:17:15","updated_at":"2026-09-25 13:17:22"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/f48763beab4eea41fc480c9702ec6eebe8d75e4f","name":"https://git.kernel.org/stable/c/f48763beab4eea41fc480c9702ec6eebe8d75e4f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/4536667fba8ddbaff2f2a135080ae6aabf737b5e","name":"https://git.kernel.org/stable/c/4536667fba8ddbaff2f2a135080ae6aabf737b5e","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fc2233f1ab2a1ca562869bca6987d7477671388c","name":"https://git.kernel.org/stable/c/fc2233f1ab2a1ca562869bca6987d7477671388c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93815","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93815","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 4536667fba8ddbaff2f2a135080ae6aabf737b5e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 fc2233f1ab2a1ca562869bca6987d7477671388c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 f48763beab4eea41fc480c9702ec6eebe8d75e4f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 2.6.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 2.6.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.111 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.53 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"93815","cve":"CVE-2026-93815","epss":"0.001660000","percentile":"0.051830000","score_date":"2026-09-25","updated_at":"2026-09-26 00:06:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/net/ethernet/amd/au1000_eth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"4536667fba8ddbaff2f2a135080ae6aabf737b5e","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"fc2233f1ab2a1ca562869bca6987d7477671388c","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"},{"lessThan":"f48763beab4eea41fc480c9702ec6eebe8d75e4f","status":"affected","version":"1da177e4c3f41524e886b7f1b8a0c1fc7321cac2","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/amd/au1000_eth.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"2.6.12"},{"lessThan":"2.6.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.111","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.53","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.111","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.53","versionStartIncluding":"2.6.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2","versionStartIncluding":"2.6.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: au1000: move free_irq out of the close-time spinlocked section\n\nau1000_close() calls free_irq() while aup->lock is still held with\nspin_lock_irqsave(). free_irq() can sleep because it takes the IRQ\ndescriptor request mutex, so it does not belong inside the close-time\nspinlocked section.\n\nThis was found by our static analysis tool and then confirmed by manual\nreview of the in-tree au1000_close() .ndo_stop path. The reviewed path\nkeeps aup->lock held across the MAC reset, queue stop and\nfree_irq(dev->irq, dev).\n\nA directed runtime validation kept that ndo_stop carrier and the same\nfree_irq(dev->irq, dev) operation under the driver lock. Lockdep reported\n\"BUG: sleeping function called from invalid context\" and \"Invalid wait\ncontext\" while free_irq() was taking desc->request_mutex, with\nau1000_close() and free_irq() on the stack.\n\nDrop aup->lock before freeing the IRQ. The protected close-time work still\nstops the device and queue before IRQ teardown, but the sleepable IRQ core\npath now runs outside the spinlocked section."}],"providerMetadata":{"dateUpdated":"2026-09-25T12:43:23.748Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/4536667fba8ddbaff2f2a135080ae6aabf737b5e"},{"url":"https://git.kernel.org/stable/c/fc2233f1ab2a1ca562869bca6987d7477671388c"},{"url":"https://git.kernel.org/stable/c/f48763beab4eea41fc480c9702ec6eebe8d75e4f"}],"title":"net: au1000: move free_irq out of the close-time spinlocked section","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93815","datePublished":"2026-09-24T16:02:52.078Z","dateReserved":"2026-09-18T17:59:28.791Z","dateUpdated":"2026-09-25T12:43:23.748Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-24 17:17:15","lastModifiedDate":"2026-09-25 13:17:22","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93815","Ordinal":"1","Title":"net: au1000: move free_irq out of the close-time spinlocked sect","CVE":"CVE-2026-93815","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93815","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: au1000: move free_irq out of the close-time spinlocked section\n\nau1000_close() calls free_irq() while aup->lock is still held with\nspin_lock_irqsave(). free_irq() can sleep because it takes the IRQ\ndescriptor request mutex, so it does not belong inside the close-time\nspinlocked section.\n\nThis was found by our static analysis tool and then confirmed by manual\nreview of the in-tree au1000_close() .ndo_stop path. The reviewed path\nkeeps aup->lock held across the MAC reset, queue stop and\nfree_irq(dev->irq, dev).\n\nA directed runtime validation kept that ndo_stop carrier and the same\nfree_irq(dev->irq, dev) operation under the driver lock. Lockdep reported\n\"BUG: sleeping function called from invalid context\" and \"Invalid wait\ncontext\" while free_irq() was taking desc->request_mutex, with\nau1000_close() and free_irq() on the stack.\n\nDrop aup->lock before freeing the IRQ. The protected close-time work still\nstops the device and queue before IRQ teardown, but the sleepable IRQ core\npath now runs outside the spinlocked section.","Type":"Description","Title":"net: au1000: move free_irq out of the close-time spinlocked sect"}]}}}