From bippy-d175d3acf727 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman To: Reply-to: , 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 5.10.51 with commit c92298d228f6 Fixed in 5.12.18 with commit 3133e01514c3 Fixed in 5.13.3 with commit ba710baa1cc1 Fixed in 5.14 with commit ad993a95c508 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/c92298d228f61589dd21657af2bea95fc866b813 https://git.kernel.org/stable/c/3133e01514c3c498f2b01ff210ee6134b70c663c https://git.kernel.org/stable/c/ba710baa1cc1b17a0483f7befe03e696efd17292 https://git.kernel.org/stable/c/ad993a95c508417acdeb15244109e009e50d8758