| 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-2022-49226: net: asix: add proper error handling of usb read errors |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: asix: add proper error handling of usb read errors |
| |
| Syzbot once again hit uninit value in asix driver. The problem still the |
| same -- asix_read_cmd() reads less bytes, than was requested by caller. |
| |
| Since all read requests are performed via asix_read_cmd() let's catch |
| usb related error there and add __must_check notation to be sure all |
| callers actually check return value. |
| |
| So, this patch adds sanity check inside asix_read_cmd(), that simply |
| checks if bytes read are not less, than was requested and adds missing |
| error handling of asix_read_cmd() all across the driver code. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49226 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 4.9 with commit d9fe64e511144c1ee7d7555b4111f09dde9692ef and fixed in 5.15.33 with commit b96a7265f763b37ff3138b9ca8122a950f13b00e |
| Issue introduced in 4.9 with commit d9fe64e511144c1ee7d7555b4111f09dde9692ef and fixed in 5.16.19 with commit 9ea8d2fca8fea3b17005b4dc02f8ef15f7a2fb97 |
| Issue introduced in 4.9 with commit d9fe64e511144c1ee7d7555b4111f09dde9692ef and fixed in 5.17.2 with commit 662ff765470ad0d11a1153d6d8e99d69a98e60b4 |
| Issue introduced in 4.9 with commit d9fe64e511144c1ee7d7555b4111f09dde9692ef and fixed in 5.18 with commit 920a9fa27e7805499cfe78491b36fed2322c02ec |
| |
| 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-2022-49226 |
| 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/asix.h |
| drivers/net/usb/asix_common.c |
| drivers/net/usb/asix_devices.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/b96a7265f763b37ff3138b9ca8122a950f13b00e |
| https://git.kernel.org/stable/c/9ea8d2fca8fea3b17005b4dc02f8ef15f7a2fb97 |
| https://git.kernel.org/stable/c/662ff765470ad0d11a1153d6d8e99d69a98e60b4 |
| https://git.kernel.org/stable/c/920a9fa27e7805499cfe78491b36fed2322c02ec |
