{"cve":"CVE-2023-53250","nvd":{"published":"2025-09-15T15:15:52.280","modified":"2026-06-17T06:44:38.027","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle\n\nKASAN reported a null-ptr-deref error:\n\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nCPU: 0 PID: 1373 Comm: modprobe\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996)\nRIP: 0010:dmi_sysfs_entry_release\n...\nCall Trace:\n <TASK>\n kobject_put\n dmi_sysfs_register_handle (drivers/firmware/dmi-sysfs.c:540) dmi_sysfs\n dmi_decode_table (drivers/firmware/dmi_scan.c:133)\n dmi_walk (drivers/firmware/dmi_scan.c:1115)\n dmi_sysfs_init (drivers/firmware/dmi-sysfs.c:149) dmi_sysfs\n do_one_initcall (init/main.c:1296)\n ...\nKernel panic - not syncing: Fatal exception\nKernel Offset: 0x4000000 from 0xffffffff81000000\n---[ end Kernel panic - not syncing: Fatal exception ]---\n\nIt is because previous patch added kobject_put() to release the memory\nwhich will call  dmi_sysfs_entry_release() and list_del().\n\nHowever, list_add_tail(entry->list) is called after the error block,\nso the list_head is uninitialized and cannot be deleted.\n\nMove error handling to after list_add_tail to fix this.","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-476"],"references":["https://git.kernel.org/stable/c/18e126e97c961f7a93823795c879d7c085fe5098","https://git.kernel.org/stable/c/5d0492d1d934642bdfd2057acc1b56f4b57be465","https://git.kernel.org/stable/c/b4fe158259fb5fead52ff2b55841ec5c39492604","https://git.kernel.org/stable/c/e851996b32264e78a10863c2ac41a8689d7b9252"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:08:41.295252406+00:00"},"epss":{"cve":"CVE-2023-53250","score":0.00148,"percentile":0.03989,"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."]}