| From bippy-1.1.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2022-49845: can: j1939: j1939_send_one(): fix missing CAN header initialization |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| can: j1939: j1939_send_one(): fix missing CAN header initialization |
| |
| The read access to struct canxl_frame::len inside of a j1939 created |
| skbuff revealed a missing initialization of reserved and later filled |
| elements in struct can_frame. |
| |
| This patch initializes the 8 byte CAN header with zero. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49845 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.4 with commit 9d71dd0c70099914fcd063135da3c580865e924c and fixed in 5.4.225 with commit d0513b095e1ef1469718564dec3fb3348556d0a8 |
| Issue introduced in 5.4 with commit 9d71dd0c70099914fcd063135da3c580865e924c and fixed in 5.10.155 with commit f8e0edeaa0f2b860bdbbf0aafb4492533043d650 |
| Issue introduced in 5.4 with commit 9d71dd0c70099914fcd063135da3c580865e924c and fixed in 5.15.79 with commit 69e86c6268d59ceddd0abe9ae8f1f5296f316c3c |
| Issue introduced in 5.4 with commit 9d71dd0c70099914fcd063135da3c580865e924c and fixed in 6.0.9 with commit 2719f82ad5d8199cf5f346ea8bb3998ad5323b72 |
| Issue introduced in 5.4 with commit 9d71dd0c70099914fcd063135da3c580865e924c and fixed in 6.1 with commit 3eb3d283e8579a22b81dd2ac3987b77465b2a22f |
| |
| 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-2022-49845 |
| 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: |
| net/can/j1939/main.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/d0513b095e1ef1469718564dec3fb3348556d0a8 |
| https://git.kernel.org/stable/c/f8e0edeaa0f2b860bdbbf0aafb4492533043d650 |
| https://git.kernel.org/stable/c/69e86c6268d59ceddd0abe9ae8f1f5296f316c3c |
| https://git.kernel.org/stable/c/2719f82ad5d8199cf5f346ea8bb3998ad5323b72 |
| https://git.kernel.org/stable/c/3eb3d283e8579a22b81dd2ac3987b77465b2a22f |
