| 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-2022-48775: Drivers: hv: vmbus: Fix memory leak in vmbus_add_channel_kobj |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Drivers: hv: vmbus: Fix memory leak in vmbus_add_channel_kobj |
| |
| kobject_init_and_add() takes reference even when it fails. |
| According to the doc of kobject_init_and_add()： |
| |
| If this function returns an error, kobject_put() must be called to |
| properly clean up the memory associated with the object. |
| |
| Fix memory leak by calling kobject_put(). |
| |
| The Linux kernel CVE team has assigned CVE-2022-48775 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.15 with commit c2e5df616e1ae6c2a074cb241ebb65a318ebaf7c and fixed in 4.19.231 with commit 417947891bd5ae327f15efed1a0da2b12ef24962 |
| Issue introduced in 4.15 with commit c2e5df616e1ae6c2a074cb241ebb65a318ebaf7c and fixed in 5.4.181 with commit fe595759c2a4a5bb41c438474f15947d8ae32f5c |
| Issue introduced in 4.15 with commit c2e5df616e1ae6c2a074cb241ebb65a318ebaf7c and fixed in 5.10.102 with commit 91d8866ca55232d21995a3d54fac96de33c9e20c |
| Issue introduced in 4.15 with commit c2e5df616e1ae6c2a074cb241ebb65a318ebaf7c and fixed in 5.15.25 with commit c377e2ba78d3fe9a1f0b4ec424e75f81da7e81e9 |
| Issue introduced in 4.15 with commit c2e5df616e1ae6c2a074cb241ebb65a318ebaf7c and fixed in 5.16.11 with commit 92e25b637cd4e010f776c86e4810300e773eac5c |
| Issue introduced in 4.15 with commit c2e5df616e1ae6c2a074cb241ebb65a318ebaf7c and fixed in 5.17 with commit 8bc69f86328e87a0ffa79438430cc82f3aa6a194 |
| |
| 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-2022-48775 |
| 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/hv/vmbus_drv.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/417947891bd5ae327f15efed1a0da2b12ef24962 |
| https://git.kernel.org/stable/c/fe595759c2a4a5bb41c438474f15947d8ae32f5c |
| https://git.kernel.org/stable/c/91d8866ca55232d21995a3d54fac96de33c9e20c |
| https://git.kernel.org/stable/c/c377e2ba78d3fe9a1f0b4ec424e75f81da7e81e9 |
| https://git.kernel.org/stable/c/92e25b637cd4e010f776c86e4810300e773eac5c |
| https://git.kernel.org/stable/c/8bc69f86328e87a0ffa79438430cc82f3aa6a194 |
