发布时间: 2024年7月19日
修改时间: 2024年8月19日
In the Linux kernel, the following vulnerability has been resolved:clk: bcm: dvp: Assign ->num before accessing ->hwsCommit f316cdff8d67 ( clk: Annotate struct clk_hw_onecell_data with__counted_by ) annotated the hws member of struct clk_hw_onecell_data with __counted_by, which informs the bounds sanitizer about the numberof elements in hws, so that it can warn when hws is accessed out ofbounds. As noted in that change, the __counted_by member must beinitialized with the number of elements before the first array accesshappens, otherwise there will be a warning from each access prior to theinitialization because the number of elements is zero. This occurs inclk_dvp_probe() due to ->num being assigned after ->hws has beenaccessed: UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2 index 0 is out of range for type struct clk_hw *[] __counted_by(num) (aka struct clk_hw *[] )Move the ->num initialization to before the first access of ->hws, whichclears up the warning.
| NVD | openEuler | |
|---|---|---|
| Confidentiality | High | |
| Attack Vector | Network | |
| CVSS评分 | N/A | 9.8 |
| Attack Complexity | Low | |
| Privileges Required | None | |
| Scope | Unchanged | |
| Integrity | High | |
| User Interaction | None | |
| Availability | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2024-3053 | In the Linux kernel, the following vulnerability has been resolved:clk: bcm: dvp: Assign ->num before accessing ->hwsCommit f316cdff8d67 ( clk: Annotate struct clk_hw_onecell_data with__counted_by ) annotated the hws member of struct clk_hw_onecell_data with __counted_by, which informs the bounds sanitizer about the numberof elements in hws, so that it can warn when hws is accessed out ofbounds. As noted in that change, the __counted_by member must beinitialized with the number of elements before the first array accesshappens, otherwise there will be a warning from each access prior to theinitialization because the number of elements is zero. This occurs inclk_dvp_probe() due to ->num being assigned after ->hws has beenaccessed: UBSAN: array-index-out-of-bounds in drivers/clk/bcm/clk-bcm2711-dvp.c:59:2 index 0 is out of range for type struct clk_hw *[] __counted_by(num) (aka struct clk_hw *[] )Move the ->num initialization to before the first access of ->hws, whichclears up the warning. | 2024年7月7日 |
| 产品 | 包 | 状态 |
|---|---|---|
| V6 | kernel | Fixed |
