发布时间: 2024年8月30日
修改时间: 2024年8月30日
In the Linux kernel, the following vulnerability has been resolved:ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()ethtool_set_coalesce() now uses both the .get_coalesce() and.set_coalesce() callbacks. But the check for their availability isbuggy, so changing the coalesce settings on a device where the driverprovides only _one_ of the callbacks results in a NULL pointerdereference instead of an -EOPNOTSUPP.Fix the condition so that the availability of both callbacks isensured. This also matches the netlink code.Note that reproducing this requires some effort - it only affects thelegacy ioctl path, and needs a specific combination of driver options:- have .get_coalesce() and .coalesce_supported but no .set_coalesce(), or- have .set_coalesce() but no .get_coalesce(). Here eg. ethtool doesn t cause the crash as it first attempts to call ethtool_get_coalesce() and bails out on error.
| NVD | openEuler | |
|---|---|---|
| Confidentiality | None | None |
| Attack Vector | Local | Local |
| CVSS评分 | 5.5 | 5.5 |
| Attack Complexity | Low | Low |
| Privileges Required | Low | Low |
| Scope | Unchanged | Unchanged |
| Integrity | None | None |
| User Interaction | None | None |
| Availability | High | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2024-2895 | In the Linux kernel, the following vulnerability has been resolved:ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()ethtool_set_coalesce() now uses both the .get_coalesce() and.set_coalesce() callbacks. But the check for their availability isbuggy, so changing the coalesce settings on a device where the driverprovides only _one_ of the callbacks results in a NULL pointerdereference instead of an -EOPNOTSUPP.Fix the condition so that the availability of both callbacks isensured. This also matches the netlink code.Note that reproducing this requires some effort - it only affects thelegacy ioctl path, and needs a specific combination of driver options:- have .get_coalesce() and .coalesce_supported but no .set_coalesce(), or- have .set_coalesce() but no .get_coalesce(). Here eg. ethtool doesn t cause the crash as it first attempts to call ethtool_get_coalesce() and bails out on error. | 2024年6月26日 |
| KylinSec-SA-2024-4977 | kernel security update | 2025年2月28日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.5.2 | kernel | Fixed |
