| 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-2022-49583: iavf: Fix handling of dummy receive descriptors |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| iavf: Fix handling of dummy receive descriptors |
| |
| Fix memory leak caused by not handling dummy receive descriptor properly. |
| iavf_get_rx_buffer now sets the rx_buffer return value for dummy receive |
| descriptors. Without this patch, when the hardware writes a dummy |
| descriptor, iavf would not free the page allocated for the previous receive |
| buffer. This is an unlikely event but can still happen. |
| |
| [Jesse: massaged commit message] |
| |
| The Linux kernel CVE team has assigned CVE-2022-49583 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.3 with commit efa14c3985828da3163f5372137cb64d992b0f79 and fixed in 5.4.208 with commit d88d59faf4e6f9cc4767664206afdb999b10ec77 |
| Issue introduced in 5.3 with commit efa14c3985828da3163f5372137cb64d992b0f79 and fixed in 5.10.134 with commit c6af94324911ef0846af1a5ce5e049ca736db34b |
| Issue introduced in 5.3 with commit efa14c3985828da3163f5372137cb64d992b0f79 and fixed in 5.15.58 with commit 2918419c06088f6709ceb543feb01752779ade4c |
| Issue introduced in 5.3 with commit efa14c3985828da3163f5372137cb64d992b0f79 and fixed in 5.18.15 with commit 6edb818732fc05fda495f5b3a749bd1cee01398b |
| Issue introduced in 5.3 with commit efa14c3985828da3163f5372137cb64d992b0f79 and fixed in 5.19 with commit a9f49e0060301a9bfebeca76739158d0cf91cdf6 |
| Issue introduced in 5.1.20 with commit 2a51e334a0ade539e5b0fcfdbd8b43acb9c7547d |
| Issue introduced in 5.2.3 with commit 833577ecf3451c7306abb48f221d365c2ee4cc1b |
| |
| 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-2022-49583 |
| 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/iavf/iavf_txrx.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/d88d59faf4e6f9cc4767664206afdb999b10ec77 |
| https://git.kernel.org/stable/c/c6af94324911ef0846af1a5ce5e049ca736db34b |
| https://git.kernel.org/stable/c/2918419c06088f6709ceb543feb01752779ade4c |
| https://git.kernel.org/stable/c/6edb818732fc05fda495f5b3a749bd1cee01398b |
| https://git.kernel.org/stable/c/a9f49e0060301a9bfebeca76739158d0cf91cdf6 |
