CVE-2021-47058

There is a upstream commit cffa4b2122f5("regmap:debugfs: Fix a memory leak when calling regmap_attach_dev") that adds a if condition when create name for debugfs_name. With below function invoking logical, debugfs_name is freed in regmap_debugfs_exit(), but it is not created again because of the if condition introduced by above commit. regmap_reinit_cache() regmap_debugfs_exit() ... regmap_debugfs_init() So, set debugfs_name to NULL after it is freed.

References

Affected packages

Git /

Affected ranges

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47058.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "4.19.168"
            },
            {
                "fixed": "4.19.191"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "5.4.90"
            },
            {
                "fixed": "5.4.119"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "5.10.8"
            },
            {
                "fixed": "5.10.37"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "5.11"
            },
            {
                "fixed": "5.11.21"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "5.12"
            },
            {
                "fixed": "5.12.4"
            }
        ]
    }
]