| 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-2022-49445: pinctrl: renesas: core: Fix possible null-ptr-deref in sh_pfc_map_resources() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| pinctrl: renesas: core: 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-2022-49445 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.3 with commit c7977ec4a33633c8e8d9267dd014356cf857351c and fixed in 5.10.121 with commit f991879762392c19661af5b722578089a12b305f |
| Issue introduced in 4.3 with commit c7977ec4a33633c8e8d9267dd014356cf857351c and fixed in 5.15.46 with commit 5ed0519d425619b435150372cce2ffeec71581fa |
| Issue introduced in 4.3 with commit c7977ec4a33633c8e8d9267dd014356cf857351c and fixed in 5.17.14 with commit e3a1ad8fd0ac11f4fa1260c23b5db71a25473254 |
| Issue introduced in 4.3 with commit c7977ec4a33633c8e8d9267dd014356cf857351c and fixed in 5.18.3 with commit fb4f022b3ad1f3ff3cafdbc7d51896090ae17701 |
| Issue introduced in 4.3 with commit c7977ec4a33633c8e8d9267dd014356cf857351c and fixed in 5.19 with commit 5376e3d904532e657fd7ca1a9b1ff3d351527b90 |
| |
| 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-2022-49445 |
| 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/core.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/f991879762392c19661af5b722578089a12b305f |
| https://git.kernel.org/stable/c/5ed0519d425619b435150372cce2ffeec71581fa |
| https://git.kernel.org/stable/c/e3a1ad8fd0ac11f4fa1260c23b5db71a25473254 |
| https://git.kernel.org/stable/c/fb4f022b3ad1f3ff3cafdbc7d51896090ae17701 |
| https://git.kernel.org/stable/c/5376e3d904532e657fd7ca1a9b1ff3d351527b90 |
