{"id":"CVE-2026-23013","title":"net: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback\n\noctep_vf_request_irqs() requests MSI-X queue IRQs with dev_id set to\nioq_vector. If request_irq() fails…","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 < aa05a8371ae4a452df623f7202c72409d3c50e40","Linux >= 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 < aa4c066229b05fc3d3c5f42693d25b1828533b6e","Linux >= 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 < f93fc5d12d69012788f82151bee55fce937e1432","Linux 6.9"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T15:06:24.345802Z"},"published":"2026-01-25","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:09:49.078Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23013","references":[{"url":"https://git.kernel.org/stable/c/aa05a8371ae4a452df623f7202c72409d3c50e40"},{"url":"https://git.kernel.org/stable/c/aa4c066229b05fc3d3c5f42693d25b1828533b6e"},{"url":"https://git.kernel.org/stable/c/f93fc5d12d69012788f82151bee55fce937e1432"}],"tags":["cve.org"],"epss":0.00175,"epssPercentile":0.06501,"ingestedAt":"2026-10-16T17:24:46.638Z","slug":"CVE-2026-23013","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: octeon_ep_vf: fix free_irq dev_id mismatch in IRQ rollback\n\noctep_vf_request_irqs() requests MSI-X queue IRQs with dev_id set to\nioq_vector. If request_irq() fails part-way, the rollback loop calls\nfree_irq() with dev_id set to 'oct', which does not match the original\ndev_id and may leave the irqaction registered.\n\nThis can keep IRQ handlers alive while ioq_vector is later freed during\nunwind/teardown, leading to a use-after-free or crash when an interrupt\nfires.\n\nFix the error path to free IRQs with the same ioq_vector dev_id used\nduring request_irq().\n\n## Affected\n\n- `Linux >= 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 < aa05a8371ae4a452df623f7202c72409d3c50e40`\n- `Linux >= 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 < aa4c066229b05fc3d3c5f42693d25b1828533b6e`\n- `Linux >= 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 < f93fc5d12d69012788f82151bee55fce937e1432`\n- `Linux 6.9`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}