{"cve":"CVE-2026-89816","nvd":{"published":"2026-09-16T11:16:46.837","modified":"2026-10-19T09:18:25.443","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Fix drm_crtc_commit leak if signaled when PAGE_FLIP_EVENT is used\n\nCommit 1c6ceeee6ebb (\"drm/atomic: Fix memleak on ERESTARTSYS during\nnon-blocking commits\") fixed a very similar issue when the event was\nallocated by drm_atomic_helper_setup_commit() itself.\n\nHowever, if the event is allocated in prepare_signaling(), it will also be\nset to NULL in complete_signaling(), which prevents drm_crtc_commit from\nbeing put in __drm_atomic_helper_crtc_destroy_state().\n\nDropping the reference when the event is set to NULL at\ncomplete_signaling() fixes the leak.\n\nThe leak can be reproduced by sending a signal to the thread using\nDRM_MODE_PAGE_FLIP_EVENT and using a sw_sync fence to cause the atomic\nioctl to block at drm_atomic_helper_wait_for_fences(). It happened both\nwith amdgpu and vkms.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/4d4be202165e832d74849b4a68e289a2a377039c","https://git.kernel.org/stable/c/66b1b309886337745d395bbc158440ab196305ce","https://git.kernel.org/stable/c/6a6a7aae4681a20cd32789fea9a487aaafa0e7a3","https://git.kernel.org/stable/c/866a04137dac7e82a3848851061ff7ed15c2847e","https://git.kernel.org/stable/c/c5517b71101f61a45144e3cf77a19626355272de"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:54:41.405518556+00:00"},"epss":{"cve":"CVE-2026-89816","score":0.00216,"percentile":0.11964,"date":"2026-10-25"},"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."]}