| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49881: wifi: cfg80211: fix memory leak in query_regdb_file() |
| |
| 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. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49881 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.15 with commit 007f6c5e6eb45c81ee89368a5f226572ae638831 and fixed in 4.19.267 with commit 219446396786330937bcd382a7bc4ccd767383bc |
| Issue introduced in 4.15 with commit 007f6c5e6eb45c81ee89368a5f226572ae638831 and fixed in 5.4.225 with commit 0ede1a988299e95d54bd89551fd635980572e920 |
| Issue introduced in 4.15 with commit 007f6c5e6eb45c81ee89368a5f226572ae638831 and fixed in 5.10.155 with commit e1e12180321f416d83444f2cdc9259e0f5093d35 |
| Issue introduced in 4.15 with commit 007f6c5e6eb45c81ee89368a5f226572ae638831 and fixed in 5.15.79 with commit 38c9fa2cc6bf4b6e1a74057aef8b5cffd23d3264 |
| Issue introduced in 4.15 with commit 007f6c5e6eb45c81ee89368a5f226572ae638831 and fixed in 6.0.9 with commit e9b5a4566d5bc71cc901be50d1fa24da00613120 |
| Issue introduced in 4.15 with commit 007f6c5e6eb45c81ee89368a5f226572ae638831 and fixed in 6.1 with commit 57b962e627ec0ae53d4d16d7bd1033e27e67677a |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2022-49881 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| net/wireless/reg.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/219446396786330937bcd382a7bc4ccd767383bc |
| https://git.kernel.org/stable/c/0ede1a988299e95d54bd89551fd635980572e920 |
| https://git.kernel.org/stable/c/e1e12180321f416d83444f2cdc9259e0f5093d35 |
| https://git.kernel.org/stable/c/38c9fa2cc6bf4b6e1a74057aef8b5cffd23d3264 |
| https://git.kernel.org/stable/c/e9b5a4566d5bc71cc901be50d1fa24da00613120 |
| https://git.kernel.org/stable/c/57b962e627ec0ae53d4d16d7bd1033e27e67677a |
