{"id":"CVE-2026-64023","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: aggregator: fix a potential use-after-free\n\nOn error we free aggr->lookups->dev_id before removing the entry from\nthe lookup table","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: aggregator: fix a potential use-after-free\n\nOn error we free aggr->lookups->dev_id before removing the entry from\nthe lookup table. If a concurrent thread calls g…","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","cwe":["CWE-416"],"vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 6.16, < 6.18.34","linux_kernel >= 6.19, < 7.0.11","linux_kernel = 7.1"],"patched":["linux_kernel 7.0.11"],"published":"2026-07-19","updated":"2026-10-13","sourceUpdated":"2026-10-13T14:57:30.633","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-64023","references":[{"url":"https://git.kernel.org/stable/c/30c073cab97afb31901f94de9605177b6b84367e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7ac4183a41ba048af89eddd82fe8be64619d0871","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/ea28b286649b70618e9dd3e895812417a7712a11","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00168,"epssPercentile":0.05709,"ingestedAt":"2026-10-13T15:33:40.024Z","slug":"CVE-2026-64023","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ngpio: aggregator: fix a potential use-after-free\n\nOn error we free aggr->lookups->dev_id before removing the entry from\nthe lookup table. If a concurrent thread calls gpiod_find() before we\nremove the entry, it could iterate over the list and call\ngpiod_match_lookup_table() which unconditionally dereferences dev_id\nwhen calling strcmp(). Reverse the order of cleanup.\n\n## Affected\n\n- `linux_kernel >= 6.16, < 6.18.34`\n- `linux_kernel >= 6.19, < 7.0.11`\n- `linux_kernel = 7.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 7.0.11`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}