| 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-2022-49449: pinctrl: renesas: rzn1: Fix possible null-ptr-deref in sh_pfc_map_resources() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| pinctrl: renesas: rzn1: Fix possible null-ptr-deref in sh_pfc_map_resources() |
| |
| It will cause null-ptr-deref when using 'res', if platform_get_resource() |
| returns NULL, so move using 'res' after devm_ioremap_resource() that |
| will check it to avoid null-ptr-deref. |
| And use devm_platform_get_and_ioremap_resource() to simplify code. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49449 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.20 with commit 4e53b5004745ef26a37bca4933b2d3ea71313f2a and fixed in 5.10.121 with commit b646e0cfeb38bf5f1944fd548f1dfa9b129fa00c |
| Issue introduced in 4.20 with commit 4e53b5004745ef26a37bca4933b2d3ea71313f2a and fixed in 5.15.46 with commit c16b59d445135c8026a04e388d8b2762feaa3b3b |
| Issue introduced in 4.20 with commit 4e53b5004745ef26a37bca4933b2d3ea71313f2a and fixed in 5.17.14 with commit 34c719b8fdfbd0c7c54cae56e6b0f16e9f8bf03e |
| Issue introduced in 4.20 with commit 4e53b5004745ef26a37bca4933b2d3ea71313f2a and fixed in 5.18.3 with commit 01f9e02e0f13df3fd291676dc80054e977be1601 |
| Issue introduced in 4.20 with commit 4e53b5004745ef26a37bca4933b2d3ea71313f2a and fixed in 5.19 with commit 2f661477c2bb8068194dbba9738d05219f111c6e |
| |
| 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-2022-49449 |
| 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/pinctrl/renesas/pinctrl-rzn1.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/b646e0cfeb38bf5f1944fd548f1dfa9b129fa00c |
| https://git.kernel.org/stable/c/c16b59d445135c8026a04e388d8b2762feaa3b3b |
| https://git.kernel.org/stable/c/34c719b8fdfbd0c7c54cae56e6b0f16e9f8bf03e |
| https://git.kernel.org/stable/c/01f9e02e0f13df3fd291676dc80054e977be1601 |
| https://git.kernel.org/stable/c/2f661477c2bb8068194dbba9738d05219f111c6e |
