| 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-2021-47171: net: usb: fix memory leak in smsc75xx_bind |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: usb: fix memory leak in smsc75xx_bind |
| |
| Syzbot reported memory leak in smsc75xx_bind(). |
| The problem was is non-freed memory in case of |
| errors after memory allocation. |
| |
| backtrace: |
| [<ffffffff84245b62>] kmalloc include/linux/slab.h:556 [inline] |
| [<ffffffff84245b62>] kzalloc include/linux/slab.h:686 [inline] |
| [<ffffffff84245b62>] smsc75xx_bind+0x7a/0x334 drivers/net/usb/smsc75xx.c:1460 |
| [<ffffffff82b5b2e6>] usbnet_probe+0x3b6/0xc30 drivers/net/usb/usbnet.c:1728 |
| |
| The Linux kernel CVE team has assigned CVE-2021-47171 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 2.6.34 with commit d0cad871703b898a442e4049c532ec39168e5b57 and fixed in 4.4.271 with commit 200dbfcad8011e50c3cec269ed7b980836eeb1fa |
| Issue introduced in 2.6.34 with commit d0cad871703b898a442e4049c532ec39168e5b57 and fixed in 4.9.271 with commit 22c840596af0c09068b6cf948616e6496e59e07f |
| Issue introduced in 2.6.34 with commit d0cad871703b898a442e4049c532ec39168e5b57 and fixed in 4.14.235 with commit 9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc |
| Issue introduced in 2.6.34 with commit d0cad871703b898a442e4049c532ec39168e5b57 and fixed in 4.19.193 with commit 9e6a3eccb28779710cbbafc4f4258d92509c6d07 |
| Issue introduced in 2.6.34 with commit d0cad871703b898a442e4049c532ec39168e5b57 and fixed in 5.4.124 with commit b95fb96e6339e34694dd578fb6bde3575b01af17 |
| Issue introduced in 2.6.34 with commit d0cad871703b898a442e4049c532ec39168e5b57 and fixed in 5.10.42 with commit 635ac38b36255d3cfb8312cf7c471334f4d537e0 |
| Issue introduced in 2.6.34 with commit d0cad871703b898a442e4049c532ec39168e5b57 and fixed in 5.12.9 with commit 70c886ac93f87ae7214a0c69151a28a8075dd95b |
| Issue introduced in 2.6.34 with commit d0cad871703b898a442e4049c532ec39168e5b57 and fixed in 5.13 with commit 46a8b29c6306d8bbfd92b614ef65a47c900d8e70 |
| |
| 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-2021-47171 |
| 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/smsc75xx.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/200dbfcad8011e50c3cec269ed7b980836eeb1fa |
| https://git.kernel.org/stable/c/22c840596af0c09068b6cf948616e6496e59e07f |
| https://git.kernel.org/stable/c/9e6b8c1ff9d997e1fa16cbd2d60739adf6dc1bbc |
| https://git.kernel.org/stable/c/9e6a3eccb28779710cbbafc4f4258d92509c6d07 |
| https://git.kernel.org/stable/c/b95fb96e6339e34694dd578fb6bde3575b01af17 |
| https://git.kernel.org/stable/c/635ac38b36255d3cfb8312cf7c471334f4d537e0 |
| https://git.kernel.org/stable/c/70c886ac93f87ae7214a0c69151a28a8075dd95b |
| https://git.kernel.org/stable/c/46a8b29c6306d8bbfd92b614ef65a47c900d8e70 |
