{"cve":"CVE-2022-50477","nvd":{"published":"2025-10-04T16:15:44.300","modified":"2026-06-17T05:23:37.987","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nrtc: class: Fix potential memleak in devm_rtc_allocate_device()\n\ndevm_rtc_allocate_device() will alloc a rtc_device first, and then run\ndev_set_name(). If dev_set_name() failed, the rtc_device will memleak.\nMove devm_add_action_or_reset() in front of dev_set_name() to prevent\nmemleak.\n\nunreferenced object 0xffff888110a53000 (size 2048):\n  comm \"python3\", pid 470, jiffies 4296078308 (age 58.882s)\n  hex dump (first 32 bytes):\n    00 00 00 00 00 00 00 00 08 30 a5 10 81 88 ff ff  .........0......\n    08 30 a5 10 81 88 ff ff 00 00 00 00 00 00 00 00  .0..............\n  backtrace:\n    [<000000004aac0364>] kmalloc_trace+0x21/0x110\n    [<000000000ff02202>] devm_rtc_allocate_device+0xd4/0x400\n    [<000000001bdf5639>] devm_rtc_device_register+0x1a/0x80\n    [<00000000351bf81c>] rx4581_probe+0xdd/0x110 [rtc_rx4581]\n    [<00000000f0eba0ae>] spi_probe+0xde/0x130\n    [<00000000bff89ee8>] really_probe+0x175/0x3f0\n    [<00000000128e8d84>] __driver_probe_device+0xe6/0x170\n    [<00000000ee5bf913>] device_driver_attach+0x32/0x80\n    [<00000000f3f28f92>] bind_store+0x10b/0x1a0\n    [<000000009ff812d8>] drv_attr_store+0x49/0x70\n    [<000000008139c323>] sysfs_kf_write+0x8d/0xb0\n    [<00000000b6146e01>] kernfs_fop_write_iter+0x214/0x2d0\n    [<00000000ecbe3895>] vfs_write+0x61a/0x7d0\n    [<00000000aa2196ea>] ksys_write+0xc8/0x190\n    [<0000000046a600f5>] do_syscall_64+0x37/0x90\n    [<00000000541a336f>] entry_SYSCALL_64_after_hwframe+0x63/0xcd","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/0bcfc8fd3e596994f527b46730579428b3a4fa5f","https://git.kernel.org/stable/c/59457a0f079eae19aaf322b3cc1c8ba66f55c5f3","https://git.kernel.org/stable/c/60da73808298ff2cfa9f165d55eb3d7aa7078601"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:11:26.888974865+00:00"},"epss":{"cve":"CVE-2022-50477","score":0.00157,"percentile":0.04827,"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."]}