| 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-2022-49528: media: i2c: dw9714: Disable the regulator when the driver fails to probe |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| media: i2c: dw9714: Disable the regulator when the driver fails to probe |
| |
| When the driver fails to probe, we will get the following splat: |
| |
| [ 59.305988] ------------[ cut here ]------------ |
| [ 59.306417] WARNING: CPU: 2 PID: 395 at drivers/regulator/core.c:2257 _regulator_put+0x3ec/0x4e0 |
| [ 59.310345] RIP: 0010:_regulator_put+0x3ec/0x4e0 |
| [ 59.318362] Call Trace: |
| [ 59.318582] <TASK> |
| [ 59.318765] regulator_put+0x1f/0x30 |
| [ 59.319058] devres_release_group+0x319/0x3d0 |
| [ 59.319420] i2c_device_probe+0x766/0x940 |
| |
| Fix this by disabling the regulator in error handling. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49528 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.13 with commit cc95d3423c6786d61e3c52898ed69955077f41a6 and fixed in 5.18.3 with commit fa83ea1de5b3efd87fe01408d5db1fd2ff4767fa |
| Issue introduced in 4.13 with commit cc95d3423c6786d61e3c52898ed69955077f41a6 and fixed in 5.19 with commit 02276e18defa2fccf16413b44440277d98c2b1ea |
| |
| 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-2022-49528 |
| 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/media/i2c/dw9714.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/fa83ea1de5b3efd87fe01408d5db1fd2ff4767fa |
| https://git.kernel.org/stable/c/02276e18defa2fccf16413b44440277d98c2b1ea |
