{"cve":"CVE-2021-47499","nvd":{"published":"2024-05-24T15:15:09.607","modified":"2026-06-17T04:17:38.020","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\niio: accel: kxcjk-1013: Fix possible memory leak in probe and remove\n\nWhen ACPI type is ACPI_SMO8500, the data->dready_trig will not be set, the\nmemory allocated by iio_triggered_buffer_setup() will not be freed, and cause\nmemory leak as follows:\n\nunreferenced object 0xffff888009551400 (size 512):\n  comm \"i2c-SMO8500-125\", pid 911, jiffies 4294911787 (age 83.852s)\n  hex dump (first 32 bytes):\n    02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 20 e2 e5 c0 ff ff ff ff  ........ .......\n  backtrace:\n    [<0000000041ce75ee>] kmem_cache_alloc_trace+0x16d/0x360\n    [<000000000aeb17b0>] iio_kfifo_allocate+0x41/0x130 [kfifo_buf]\n    [<000000004b40c1f5>] iio_triggered_buffer_setup_ext+0x2c/0x210 [industrialio_triggered_buffer]\n    [<000000004375b15f>] kxcjk1013_probe+0x10c3/0x1d81 [kxcjk_1013]\n\nFix it by remove data->dready_trig condition in probe and remove.","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/14508fe13b1c578b3d2ba574f1d48b351975860c","https://git.kernel.org/stable/c/3899700ddacbf7aaafadf44464fff3ff0d4e3307","https://git.kernel.org/stable/c/60a55b9d91ba99eb8cf015bc46dc2de05e168a15","https://git.kernel.org/stable/c/70c9774e180d151abaab358108e3510a8e615215","https://git.kernel.org/stable/c/8c163a14277115ca962103910ab4cce55e862ffb"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:50:30.954589733+00:00"},"epss":{"cve":"CVE-2021-47499","score":0.0024,"percentile":0.15134,"date":"2026-10-31"},"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."]}