| 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-2022-49246: ASoC: atmel: Fix error handling in snd_proto_probe |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ASoC: atmel: Fix error handling in snd_proto_probe |
| |
| The device_node pointer is returned by of_parse_phandle() with refcount |
| incremented. We should use of_node_put() on it when done. |
| |
| This function only calls of_node_put() in the regular path. |
| And it will cause refcount leak in error paths. |
| Fix this by calling of_node_put() in error handling too. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49246 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.20 with commit a45f8853a5f95e3760dfbd7ba09d3d597d247040 and fixed in 5.15.33 with commit f32ac9bf5e3f594ef9bfedb410aebc98cf784e69 |
| Issue introduced in 4.20 with commit a45f8853a5f95e3760dfbd7ba09d3d597d247040 and fixed in 5.16.19 with commit 0f517480d5888cd54487c5662ce4da95b30ad798 |
| Issue introduced in 4.20 with commit a45f8853a5f95e3760dfbd7ba09d3d597d247040 and fixed in 5.17.2 with commit 8fa969cd8485031294f91fc7184399000cae6355 |
| Issue introduced in 4.20 with commit a45f8853a5f95e3760dfbd7ba09d3d597d247040 and fixed in 5.18 with commit b0bfaf0544d08d093d6211d7ef8816fb0b5b6c75 |
| |
| 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-2022-49246 |
| 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: |
| sound/soc/atmel/mikroe-proto.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/f32ac9bf5e3f594ef9bfedb410aebc98cf784e69 |
| https://git.kernel.org/stable/c/0f517480d5888cd54487c5662ce4da95b30ad798 |
| https://git.kernel.org/stable/c/8fa969cd8485031294f91fc7184399000cae6355 |
| https://git.kernel.org/stable/c/b0bfaf0544d08d093d6211d7ef8816fb0b5b6c75 |
