| 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-2021-47495: usbnet: sanity check for maxpacket |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| usbnet: sanity check for maxpacket |
| |
| maxpacket of 0 makes no sense and oopses as we need to divide |
| by it. Give up. |
| |
| V2: fixed typo in log and stylistic issues |
| |
| The Linux kernel CVE team has assigned CVE-2021-47495 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 4.4.291 with commit b9eba0a4a527e04d712f0e0401e5391ef124b33e |
| Fixed in 4.9.289 with commit 524f333e98138d909a0a0c574a9ff6737dce2767 |
| Fixed in 4.14.254 with commit 74b3b27cf9fecce00cd8918b7882fd81191d0aa4 |
| Fixed in 4.19.215 with commit 002d82227c0abe29118cf80f7e2f396b22d448ed |
| Fixed in 5.4.157 with commit 492140e45d2bf27c1014243f8616a9b612144e20 |
| Fixed in 5.10.77 with commit 693ecbe8f799405f8775719deedb1f76265d375a |
| Fixed in 5.14.16 with commit 7e8b6a4f18edee070213cb6a77118e8a412253c5 |
| Fixed in 5.15 with commit 397430b50a363d8b7bdda00522123f82df6adc5e |
| |
| 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-2021-47495 |
| 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/usb/usbnet.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/b9eba0a4a527e04d712f0e0401e5391ef124b33e |
| https://git.kernel.org/stable/c/524f333e98138d909a0a0c574a9ff6737dce2767 |
| https://git.kernel.org/stable/c/74b3b27cf9fecce00cd8918b7882fd81191d0aa4 |
| https://git.kernel.org/stable/c/002d82227c0abe29118cf80f7e2f396b22d448ed |
| https://git.kernel.org/stable/c/492140e45d2bf27c1014243f8616a9b612144e20 |
| https://git.kernel.org/stable/c/693ecbe8f799405f8775719deedb1f76265d375a |
| https://git.kernel.org/stable/c/7e8b6a4f18edee070213cb6a77118e8a412253c5 |
| https://git.kernel.org/stable/c/397430b50a363d8b7bdda00522123f82df6adc5e |
