| 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-2021-47184: i40e: Fix NULL ptr dereference on VSI filter sync |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| i40e: Fix NULL ptr dereference on VSI filter sync |
| |
| Remove the reason of null pointer dereference in sync VSI filters. |
| Added new I40E_VSI_RELEASING flag to signalize deleting and releasing |
| of VSI resources to sync this thread with sync filters subtask. |
| Without this patch it is possible to start update the VSI filter list |
| after VSI is removed, that's causing a kernel oops. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47184 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 3.12 with commit 41c445ff0f482bb6e6b72dcee9e598e20575f743 and fixed in 4.14.256 with commit 78f2a9e831f9610e3655a0be5e675e1aa2472089 |
| Issue introduced in 3.12 with commit 41c445ff0f482bb6e6b72dcee9e598e20575f743 and fixed in 4.19.218 with commit 87c421ab4a43433cb009fea44bbbc77f46913e1d |
| Issue introduced in 3.12 with commit 41c445ff0f482bb6e6b72dcee9e598e20575f743 and fixed in 5.4.162 with commit c30162da91327e4cdf7cd03079f096bb3654738c |
| Issue introduced in 3.12 with commit 41c445ff0f482bb6e6b72dcee9e598e20575f743 and fixed in 5.10.82 with commit f866513ead4370402428ef724b03c3312295c178 |
| Issue introduced in 3.12 with commit 41c445ff0f482bb6e6b72dcee9e598e20575f743 and fixed in 5.15.5 with commit e91e8427a1e1633a0261e3bb0201c836ac5b3890 |
| Issue introduced in 3.12 with commit 41c445ff0f482bb6e6b72dcee9e598e20575f743 and fixed in 5.16 with commit 37d9e304acd903a445df8208b8a13d707902dea6 |
| |
| 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-2021-47184 |
| 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/ethernet/intel/i40e/i40e.h |
| drivers/net/ethernet/intel/i40e/i40e_main.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/78f2a9e831f9610e3655a0be5e675e1aa2472089 |
| https://git.kernel.org/stable/c/87c421ab4a43433cb009fea44bbbc77f46913e1d |
| https://git.kernel.org/stable/c/c30162da91327e4cdf7cd03079f096bb3654738c |
| https://git.kernel.org/stable/c/f866513ead4370402428ef724b03c3312295c178 |
| https://git.kernel.org/stable/c/e91e8427a1e1633a0261e3bb0201c836ac5b3890 |
| https://git.kernel.org/stable/c/37d9e304acd903a445df8208b8a13d707902dea6 |
