{"id":"CVE-2026-100074","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark bpf_refcount field as unique\n\nBPF_REFCOUNT is not marked as a unique field, while it should be","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark bpf_refcount field as unique\n\nBPF_REFCOUNT is not marked as a unique field, while it should be. Fix\nthis oversight.","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.4, < 6.18.52","linux_kernel >= 6.19, < 7.2.6"],"patched":["linux_kernel 7.2.6"],"published":"2026-09-25","updated":"2026-10-02","sourceUpdated":"2026-10-02T15:08:08.060","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100074","references":[{"url":"https://git.kernel.org/stable/c/61e655391cb19c31f94ecd4354f624c81ce4cf75","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/641f814965d733936ca3618d4d5a12a8fa9be00e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e42cede6f90177f4f92f80d3de18f628e61d2087","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/015f9fbcf3382c5eb563a157ee8cabb6fbfcfe5e"},{"url":"https://git.kernel.org/stable/c/20b3c72c1b83054c568d2322a95e217fdc281bc3"}],"tags":["nvd","cve.org"],"epss":0.00155,"epssPercentile":0.04609,"ingestedAt":"2026-09-25T14:09:46.375Z","slug":"CVE-2026-100074","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark bpf_refcount field as unique\n\nBPF_REFCOUNT is not marked as a unique field, while it should be. Fix\nthis oversight.\n\n## Affected\n\n- `linux_kernel >= 6.4, < 6.18.52`\n- `linux_kernel >= 6.19, < 7.2.6`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.2.6`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":214954,"id":"CVE-2026-100074","ts":1790954531245,"field":"cvss","old":null,"new":"5.5"},{"seq":214953,"id":"CVE-2026-100074","ts":1790954531245,"field":"severity","old":"none","new":"medium"}]}