| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49342: net: ethernet: bgmac: Fix refcount leak in bcma_mdio_mii_register |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: ethernet: bgmac: Fix refcount leak in bcma_mdio_mii_register |
| |
| of_get_child_by_name() returns a node pointer with refcount |
| incremented, we should use of_node_put() on it when not need anymore. |
| Add missing of_node_put() to avoid refcount leak. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49342 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.8 with commit 55954f3bfdacc5908515b0c306cea23e77fab740 and fixed in 5.17.15 with commit b51996e35bbfcc7a27d94dfeed5cc2429b2c0df4 |
| Issue introduced in 4.8 with commit 55954f3bfdacc5908515b0c306cea23e77fab740 and fixed in 5.18.4 with commit 7fb1fe7d9a167205413f1de8db9f7d0f82c78286 |
| Issue introduced in 4.8 with commit 55954f3bfdacc5908515b0c306cea23e77fab740 and fixed in 5.19 with commit b8d91399775c55162073bb2aca061ec42e3d4bc1 |
| |
| 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-2022-49342 |
| 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: |
| drivers/net/ethernet/broadcom/bgmac-bcma-mdio.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/b51996e35bbfcc7a27d94dfeed5cc2429b2c0df4 |
| https://git.kernel.org/stable/c/7fb1fe7d9a167205413f1de8db9f7d0f82c78286 |
| https://git.kernel.org/stable/c/b8d91399775c55162073bb2aca061ec42e3d4bc1 |
