{"cve":"CVE-2026-31750","nvd":{"published":"2026-05-01T15:16:37.850","modified":"2026-06-17T10:34:23.650","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: runflags cannot determine whether to reclaim chanlist\n\nsyzbot reported a memory leak [1], because commit 4e1da516debb (\"comedi:\nAdd reference counting for Comedi command handling\") did not consider\nthe exceptional exit case in do_cmd_ioctl() where runflags is not set.\nThis caused chanlist not to be properly freed by do_become_nonbusy(),\nas it only frees chanlist when runflags is correctly set.\n\nAdded a check in do_become_nonbusy() for the case where runflags is not\nset, to properly free the chanlist memory.\n\n[1]\nBUG: memory leak\n  backtrace (crc 844a0efa):\n    __comedi_get_user_chanlist drivers/comedi/comedi_fops.c:1815 [inline]\n    do_cmd_ioctl.part.0+0x112/0x350 drivers/comedi/comedi_fops.c:1890\n    do_cmd_ioctl drivers/comedi/comedi_fops.c:1858 [inline]","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-401"],"references":["https://git.kernel.org/stable/c/29f644f14b89e6c4965e3c89251929e451190a66","https://git.kernel.org/stable/c/830c848aba9f047eb6b34288975ebeb8e8621451"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2026-31750","score":0.00107,"percentile":0.01153,"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."]}