| 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-2022-49141: net: dsa: felix: fix possible NULL pointer dereference |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| net: dsa: felix: fix possible NULL pointer dereference |
| |
| As the possible failure of the allocation, kzalloc() may return NULL |
| pointer. |
| Therefore, it should be better to check the 'sgi' in order to prevent |
| the dereference of NULL pointer. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49141 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.17 with commit 23ae3a7877718931474684ef4fbbaf1d1511ee84 and fixed in 5.17.3 with commit b7ff8b5e75d4e91ec8c62d621aac8dfb84c57aa9 |
| Issue introduced in 5.17 with commit 23ae3a7877718931474684ef4fbbaf1d1511ee84 and fixed in 5.18 with commit 866b7a278cdb51eb158cd8513bc7438fc857804a |
| |
| 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-2022-49141 |
| 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/dsa/ocelot/felix_vsc9959.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/b7ff8b5e75d4e91ec8c62d621aac8dfb84c57aa9 |
| https://git.kernel.org/stable/c/866b7a278cdb51eb158cd8513bc7438fc857804a |
