| 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-2021-46995: can: mcp251xfd: mcp251xfd_probe(): fix an error pointer dereference in probe |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| can: mcp251xfd: mcp251xfd_probe(): fix an error pointer dereference in probe |
| |
| When we converted this code to use dev_err_probe() we accidentally |
| removed a return. It means that if devm_clk_get() it will lead to an |
| Oops when we call clk_get_rate() on the next line. |
| |
| The Linux kernel CVE team has assigned CVE-2021-46995 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.12 with commit cf8ee6de2543a0fa6d9471ddbb7216464a9681a1 and fixed in 5.12.5 with commit 15f8f96ec7fc35024d4e03296e4d838fcea33d83 |
| Issue introduced in 5.12 with commit cf8ee6de2543a0fa6d9471ddbb7216464a9681a1 and fixed in 5.13 with commit 4cc7faa406975b460aa674606291dea197c1210c |
| |
| 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-2021-46995 |
| 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/net/can/spi/mcp251xfd/mcp251xfd-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/15f8f96ec7fc35024d4e03296e4d838fcea33d83 |
| https://git.kernel.org/stable/c/4cc7faa406975b460aa674606291dea197c1210c |
