发布时间: 2023年3月9日
修改时间: 2024年11月30日
pick_next_rt_entity() may return a type confused entry, notdetected by the BUG_ON condition, as the confused entry will not beNULL, but list_head.The buggy error condition would lead to a type confused entry with thelist head, which would then be used as a type confusedsched_rt_entity, causing memory corruption.It is hard to trigger it, because found it with static analysis and were not able to trigger it manually. But pick_next_rt_entity() may return a type confused entry, the BUG_ON will never trigger since it assumes the error condition is NULL, while the buggy error condition would be a type confused entry with the list head, which would then be used as a type confused sched_rt_entity.Reference:https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7c4a5b89a0b5a57a64b601775b296abf77a9fe97
| NVD | openEuler | |
|---|---|---|
| Confidentiality | High | High |
| Attack Vector | Local | Local |
| CVSS评分 | 7.0 | 7.0 |
| Attack Complexity | High | High |
| Privileges Required | Low | Low |
| Scope | Unchanged | Unchanged |
| Integrity | High | High |
| User Interaction | None | None |
| Availability | High | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2023-1165 | pick_next_rt_entity() may return a type confused entry, notdetected by the BUG_ON condition, as the confused entry will not beNULL, but list_head.The buggy error condition would lead to a type confused entry with thelist head, which would then be used as a type confusedsched_rt_entity, causing memory corruption.It is hard to trigger it, because found it with static analysis and were not able to trigger it manually. But pick_next_rt_entity() may return a type confused entry, the BUG_ON will never trigger since it assumes the error condition is NULL, while the buggy error condition would be a type confused entry with the list head, which would then be used as a type confused sched_rt_entity.Reference:https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=7c4a5b89a0b5a57a64b601775b296abf77a9fe97 | 2023年3月9日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | kernel | Unaffected |
| KY3.4-5 | kernel | Unaffected |
| KY3.5.1 | kernel | Unaffected |
| KY3.5.2 | kernel | Unaffected |
