{"cve":"CVE-2022-49410","nvd":{"published":"2025-02-26T07:01:17.517","modified":"2026-06-17T05:17:58.203","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix potential double free in create_var_ref()\n\nIn create_var_ref(), init_var_ref() is called to initialize the fields\nof variable ref_field, which is allocated in the previous function call\nto create_hist_field(). Function init_var_ref() allocates the\ncorresponding fields such as ref_field->system, but frees these fields\nwhen the function encounters an error. The caller later calls\ndestroy_hist_field() to conduct error handling, which frees the fields\nand the variable itself. This results in double free of the fields which\nare already freed in the previous function.\n\nFix this by storing NULL to the corresponding fields when they are freed\nin init_var_ref().","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-415"],"references":["https://git.kernel.org/stable/c/058cb6d86b9789377216c936506b346aaa1eb581","https://git.kernel.org/stable/c/37443b3508b8cce6832f8d25cb4550b2f7801f50","https://git.kernel.org/stable/c/4fdfb15e08598711dbf50daf56a33965232daf0e","https://git.kernel.org/stable/c/99696a2592bca641eb88cc9a80c90e591afebd0f","https://git.kernel.org/stable/c/bd83ff3bbfb003832481c9bff999d12385f396ae"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49410","score":0.00297,"percentile":0.22416,"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."]}