发布时间: 2025年4月17日
修改时间: 2025年4月19日
In the Linux kernel, the following vulnerability has been resolved: ublk: make sure ubq->canceling is set when queue is frozen Now ublk driver depends on `ubq->canceling` for deciding if the request can be dispatched via uring_cmd & io_uring_cmd_complete_in_task(). Once ubq->canceling is set, the uring_cmd can be done via ublk_cancel_cmd() and io_uring_cmd_done(). So set ubq->canceling when queue is frozen, this way makes sure that the flag can be observed from ublk_queue_rq() reliably, and avoids use-after-free on uring_cmd.
| NVD | openEuler | |
|---|---|---|
| CVSS评分 | N/A | 3.9 |
| Attack Vector | Local | |
| Attack Complexity | High | |
| Privileges Required | High | |
| User Interaction | None | |
| Scope | Unchanged | |
| Confidentiality | Low | |
| Integrity | Low | |
| Availability | Low |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2025-1824 | In the Linux kernel, the following vulnerability has been resolved: ublk: make sure ubq->canceling is set when queue is frozen Now ublk driver depends on `ubq->canceling` for deciding if the request can be dispatched via uring_cmd & io_uring_cmd_complete_in_task(). Once ubq->canceling is set, the uring_cmd can be done via ublk_cancel_cmd() and io_uring_cmd_done(). So set ubq->canceling when queue is frozen, this way makes sure that the flag can be observed from ublk_queue_rq() reliably, and avoids use-after-free on uring_cmd. | 2025年4月19日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-5 | kernel | Unaffected |
| KY3.5.3 | kernel | Unaffected |
| V6 | kernel | Unaffected |
