{"id":"CVE-2026-74309","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-74309","summary":"vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler\n\nLook up the IRQ index in oct_hw->irqs instead of assuming\nirq - irqs[0]. This supports non-contiguous IRQ numbers and\navoids incorrect ring indexing when irqs[0] is not the base.","published":"2026-08-15T05:58:09.366Z","modified":"2026-08-18T03:56:46.338530486Z","cvss":{"score":10,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.18.40"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0d21a1d6375a05274291e32c1ab7cd57dbb69513"},{"type":"WEB","url":"https://git.kernel.org/stable/c/3ef0cfa77a3d526591be069850d186c255e3f0cc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c6c7eae5de798442987619434171ac886035d57c"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74309.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-74309"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-18T03:56:46.338530486Z"}}