{"cve":"CVE-2024-36961","nvd":{"published":"2024-06-03T08:15:09.660","modified":"2026-08-04T11:18:34.773","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nthermal/debugfs: Fix two locking issues with thermal zone debug\n\nWith the current thermal zone locking arrangement in the debugfs code,\nuser space can open the \"mitigations\" file for a thermal zone before\nthe zone's debugfs pointer is set which will result in a NULL pointer\ndereference in tze_seq_start().\n\nMoreover, thermal_debug_tz_remove() is not called under the thermal\nzone lock, so it can run in parallel with the other functions accessing\nthe thermal zone's struct thermal_debugfs object.  Then, it may clear\ntz->debugfs after one of those functions has checked it and the\nstruct thermal_debugfs object may be freed prematurely.\n\nTo address the first problem, pass a pointer to the thermal zone's\nstruct thermal_debugfs object to debugfs_create_file() in\nthermal_debug_tz_add() and make tze_seq_start(), tze_seq_next(),\ntze_seq_stop(), and tze_seq_show() retrieve it from s->private\ninstead of a pointer to the thermal zone object.  This will ensure\nthat tz_debugfs will be valid across the \"mitigations\" file accesses\nuntil thermal_debugfs_remove_id() called by thermal_debug_tz_remove()\nremoves that file.\n\nTo address the second problem, use tz->lock in thermal_debug_tz_remove()\naround the tz->debugfs value check (in case the same thermal zone is\nremoved at the same time in two different threads) and its reset to NULL.\n\nCc :6.8+ <stable@vger.kernel.org> # 6.8+","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-667"],"references":["https://git.kernel.org/stable/c/6c57bdd0505422d5ccd2df541d993aec978c842e","https://git.kernel.org/stable/c/c7f7c37271787a7f77d7eedc132b0b419a76b4c8","https://git.kernel.org/stable/c/6c57bdd0505422d5ccd2df541d993aec978c842e","https://git.kernel.org/stable/c/c7f7c37271787a7f77d7eedc132b0b419a76b4c8"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:51:20.603330631+00:00"},"epss":{"cve":"CVE-2024-36961","score":0.0015,"percentile":0.04177,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}