{"id":"CVE-2026-90217","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Compare iterator types during state pruning\n\nAn iterator stack slot can be MEM_RCU or PTR_UNTRUSTED","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Compare iterator types during state pruning\n\nAn iterator stack slot can be MEM_RCU or PTR_UNTRUSTED. These states\nmust not be equal, or the verifier can prune an u…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= dfab99df147b0d364f0c199f832ff2aedfb2265a < 6424b9cde9edc7f2098115bbfd1ee3d84a958380","Linux >= dfab99df147b0d364f0c199f832ff2aedfb2265a < 83608e303b95d07afba1c15da0b5d9e513c2f15a","Linux 6.7"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T18:17:46.850","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90217","references":[{"url":"https://git.kernel.org/stable/c/6424b9cde9edc7f2098115bbfd1ee3d84a958380","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/83608e303b95d07afba1c15da0b5d9e513c2f15a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00154,"epssPercentile":0.04906,"ingestedAt":"2026-09-17T16:21:47.856Z","slug":"CVE-2026-90217","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Compare iterator types during state pruning\n\nAn iterator stack slot can be MEM_RCU or PTR_UNTRUSTED. These states\nmust not be equal, or the verifier can prune an unsafe path.\n\nCompare the pointer type for STACK_ITER slots.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207183,"id":"CVE-2026-90217","ts":1789757339479,"field":"cvss","old":null,"new":"7.8"},{"seq":207182,"id":"CVE-2026-90217","ts":1789757339479,"field":"severity","old":"none","new":"high"}]}