{"id":"CVE-2026-89992","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ncpuidle: dt_idle_genpd: kfree() the original name allocation\n\ndt_idle_pd_alloc() kasprintf()s the full node path, then points\npd->name at kbasename() of that string","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncpuidle: dt_idle_genpd: kfree() the original name allocation\n\ndt_idle_pd_alloc() kasprintf()s the full node path, then points\npd->name at kbasename() of that string. dt…","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 9d976d6721dfb525b81ce981e1363c70c0975aab < 1312ae33b91430ec99e69cd3d47f0e50a4ebf54b","Linux >= 9d976d6721dfb525b81ce981e1363c70c0975aab < a38caa9ed0d5c61c17d88393b14b292199289c1f","Linux >= 9d976d6721dfb525b81ce981e1363c70c0975aab < 09d002c8fb0261d35ce9d8a705de5db034ee90b8","Linux >= 9d976d6721dfb525b81ce981e1363c70c0975aab < b519dfce1998c323e54a56f911cf708d9ba0e076","Linux >= 9d976d6721dfb525b81ce981e1363c70c0975aab < 3394c7ba23336bdb7ece29127130fd01731d42d8","Linux >= 9d976d6721dfb525b81ce981e1363c70c0975aab < 2b0ac85512b7f67479127b2713254490662eb13d","Linux 5.18"],"published":"2026-09-16","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:18:22.920","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89992","references":[{"url":"https://git.kernel.org/stable/c/09d002c8fb0261d35ce9d8a705de5db034ee90b8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1312ae33b91430ec99e69cd3d47f0e50a4ebf54b","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2b0ac85512b7f67479127b2713254490662eb13d","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3394c7ba23336bdb7ece29127130fd01731d42d8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a38caa9ed0d5c61c17d88393b14b292199289c1f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b519dfce1998c323e54a56f911cf708d9ba0e076","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-16T10:53:53.947Z","epss":0.00182,"epssPercentile":0.08054,"slug":"CVE-2026-89992","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncpuidle: dt_idle_genpd: kfree() the original name allocation\n\ndt_idle_pd_alloc() kasprintf()s the full node path, then points\npd->name at kbasename() of that string. dt_idle_pd_free() kfree()s\npd->name, which is no longer the start of the allocation.\n\nCopy the basename instead.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":205051,"id":"CVE-2026-89992","ts":1789570704958,"field":"cvss","old":null,"new":"8.4"},{"seq":205050,"id":"CVE-2026-89992","ts":1789570704958,"field":"severity","old":"none","new":"high"}]}