| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2021-47352: virtio-net: Add validation for used length |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| virtio-net: Add validation for used length |
| |
| This adds validation for used length (might come |
| from an untrusted device) to avoid data corruption |
| or loss. |
| |
| The Linux kernel CVE team has assigned CVE-2021-47352 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.4.293 with commit c1b40d1959517ff2ea473d40eeab4691d6d62462 |
| Fixed in 5.10.51 with commit c92298d228f61589dd21657af2bea95fc866b813 |
| Fixed in 5.12.18 with commit 3133e01514c3c498f2b01ff210ee6134b70c663c |
| Fixed in 5.13.3 with commit ba710baa1cc1b17a0483f7befe03e696efd17292 |
| Fixed in 5.14 with commit ad993a95c508417acdeb15244109e009e50d8758 |
| |
| 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-2021-47352 |
| 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/virtio_net.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/c1b40d1959517ff2ea473d40eeab4691d6d62462 |
| https://git.kernel.org/stable/c/c92298d228f61589dd21657af2bea95fc866b813 |
| https://git.kernel.org/stable/c/3133e01514c3c498f2b01ff210ee6134b70c663c |
| https://git.kernel.org/stable/c/ba710baa1cc1b17a0483f7befe03e696efd17292 |
| https://git.kernel.org/stable/c/ad993a95c508417acdeb15244109e009e50d8758 |
