| 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-2022-49494: mtd: rawnand: cadence: fix possible null-ptr-deref in cadence_nand_dt_probe() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| mtd: rawnand: cadence: fix possible null-ptr-deref in cadence_nand_dt_probe() |
| |
| 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-2022-49494 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.5 with commit ec4ba01e894d3165e4d1ccbef782ef5593b708b4 and fixed in 5.10.121 with commit 81f1ddffdc22ca5789e33b9d4712914e302090c1 |
| Issue introduced in 5.5 with commit ec4ba01e894d3165e4d1ccbef782ef5593b708b4 and fixed in 5.15.46 with commit 0cfee868b89ffa945f3d535ee5c985cb40c5a0f8 |
| Issue introduced in 5.5 with commit ec4ba01e894d3165e4d1ccbef782ef5593b708b4 and fixed in 5.17.14 with commit 069af5e27c1b0f7677ef76d8d3102e503ca4f80b |
| Issue introduced in 5.5 with commit ec4ba01e894d3165e4d1ccbef782ef5593b708b4 and fixed in 5.18.3 with commit 13b60d3dc84b47307669edb66b633b18466014b4 |
| Issue introduced in 5.5 with commit ec4ba01e894d3165e4d1ccbef782ef5593b708b4 and fixed in 5.19 with commit a28ed09dafee20da51eb26452950839633afd824 |
| |
| 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-2022-49494 |
| 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/mtd/nand/raw/cadence-nand-controller.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/81f1ddffdc22ca5789e33b9d4712914e302090c1 |
| https://git.kernel.org/stable/c/0cfee868b89ffa945f3d535ee5c985cb40c5a0f8 |
| https://git.kernel.org/stable/c/069af5e27c1b0f7677ef76d8d3102e503ca4f80b |
| https://git.kernel.org/stable/c/13b60d3dc84b47307669edb66b633b18466014b4 |
| https://git.kernel.org/stable/c/a28ed09dafee20da51eb26452950839633afd824 |
