CVE-2022-49881

wifi: cfg80211: fix memory leak in query_regdb_file()

State: Published
Severity: 5.5 Medium
Published: May 1, 2025
Updated: May 11, 2026
Reserved: May 1, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

wifi: cfg80211: fix memory leak in query_regdb_file()

In the function query_regdb_file() the alpha2 parameter is duplicated using kmemdup() and subsequently freed in regdb_fw_cb(). However, request_firmware_nowait() can fail without calling regdb_fw_cb() and thus leak memory.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-401 Missing Release of Memory after Effective Lifetime

Affected Products

Product	Versions
LinuxLinux	007f6c5e6eb45c81ee89368a5f226572ae638831 to before 219446396786330937bcd382a7bc4ccd767383bcAffected 007f6c5e6eb45c81ee89368a5f226572ae638831 to before 0ede1a988299e95d54bd89551fd635980572e920Affected 007f6c5e6eb45c81ee89368a5f226572ae638831 to before e1e12180321f416d83444f2cdc9259e0f5093d35Affected 007f6c5e6eb45c81ee89368a5f226572ae638831 to before 38c9fa2cc6bf4b6e1a74057aef8b5cffd23d3264Affected 007f6c5e6eb45c81ee89368a5f226572ae638831 to before e9b5a4566d5bc71cc901be50d1fa24da00613120Affected 007f6c5e6eb45c81ee89368a5f226572ae638831 to before 57b962e627ec0ae53d4d16d7bd1033e27e67677aAffected
LinuxLinux	4.15Affected before 4.15Not affected 4.19.267 through 4.19.Not affected 5.4.225 through 5.4.Not affected 5.10.155 through 5.10.Not affected 5.15.79 through 5.15.Not affected 6.0.9 through 6.0.*Not affected 6.1 and laterNot affected

Product

Versions

LinuxLinux

007f6c5e6eb45c81ee89368a5f226572ae638831 to before 219446396786330937bcd382a7bc4ccd767383bcAffected
007f6c5e6eb45c81ee89368a5f226572ae638831 to before 0ede1a988299e95d54bd89551fd635980572e920Affected
007f6c5e6eb45c81ee89368a5f226572ae638831 to before e1e12180321f416d83444f2cdc9259e0f5093d35Affected
007f6c5e6eb45c81ee89368a5f226572ae638831 to before 38c9fa2cc6bf4b6e1a74057aef8b5cffd23d3264Affected
007f6c5e6eb45c81ee89368a5f226572ae638831 to before e9b5a4566d5bc71cc901be50d1fa24da00613120Affected
007f6c5e6eb45c81ee89368a5f226572ae638831 to before 57b962e627ec0ae53d4d16d7bd1033e27e67677aAffected

LinuxLinux

4.15Affected
before 4.15Not affected
4.19.267 through 4.19.*Not affected
5.4.225 through 5.4.*Not affected
5.10.155 through 5.10.*Not affected
5.15.79 through 5.15.*Not affected
6.0.9 through 6.0.*Not affected
6.1 and laterNot affected

References

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