| 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-2021-47093: platform/x86: intel_pmc_core: fix memleak on registration failure |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| platform/x86: intel_pmc_core: fix memleak on registration failure |
| |
| In case device registration fails during module initialisation, the |
| platform device structure needs to be freed using platform_device_put() |
| to properly free all resources (e.g. the device name). |
| |
| The Linux kernel CVE team has assigned CVE-2021-47093 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.9 with commit 938835aa903ae19ad62805134f79bbcf20fc3bea and fixed in 5.10.89 with commit 7a37f2e370699e2feca3dca6c8178c71ceee7e8a |
| Issue introduced in 5.9 with commit 938835aa903ae19ad62805134f79bbcf20fc3bea and fixed in 5.15.12 with commit 9ca1324755f1f8629a370af5cc315b175331f5d1 |
| Issue introduced in 5.9 with commit 938835aa903ae19ad62805134f79bbcf20fc3bea and fixed in 5.16 with commit 26a8b09437804fabfb1db080d676b96c0de68e7c |
| |
| 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-2021-47093 |
| 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/platform/x86/intel/pmc/pltdrv.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/7a37f2e370699e2feca3dca6c8178c71ceee7e8a |
| https://git.kernel.org/stable/c/9ca1324755f1f8629a370af5cc315b175331f5d1 |
| https://git.kernel.org/stable/c/26a8b09437804fabfb1db080d676b96c0de68e7c |
