| 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-2022-49516: ice: always check VF VSI pointer values |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| ice: always check VF VSI pointer values |
| |
| The ice_get_vf_vsi function can return NULL in some cases, such as if |
| handling messages during a reset where the VSI is being removed and |
| recreated. |
| |
| Several places throughout the driver do not bother to check whether this |
| VSI pointer is valid. Static analysis tools maybe report issues because |
| they detect paths where a potentially NULL pointer could be dereferenced. |
| |
| Fix this by checking the return value of ice_get_vf_vsi everywhere. |
| |
| The Linux kernel CVE team has assigned CVE-2022-49516 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.16 with commit 37165e3f5664ee901e89ff9c13723c2743c5e47f and fixed in 5.18.3 with commit e7be3877589d539c52e5d1d23a625f889b541b9d |
| Issue introduced in 5.16 with commit 37165e3f5664ee901e89ff9c13723c2743c5e47f and fixed in 5.19 with commit baeb705fd6a7245cc1fa69ed991a9cffdf44a174 |
| |
| 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-2022-49516 |
| 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/ethernet/intel/ice/ice_devlink.c |
| drivers/net/ethernet/intel/ice/ice_repr.c |
| drivers/net/ethernet/intel/ice/ice_sriov.c |
| drivers/net/ethernet/intel/ice/ice_vf_lib.c |
| drivers/net/ethernet/intel/ice/ice_virtchnl.c |
| drivers/net/ethernet/intel/ice/ice_virtchnl_fdir.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/e7be3877589d539c52e5d1d23a625f889b541b9d |
| https://git.kernel.org/stable/c/baeb705fd6a7245cc1fa69ed991a9cffdf44a174 |
