CVE-2026-99202— Linux libsas 存储管理协议IO死锁漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
在 Linux 内核中，以下漏洞已得到修复： scsi: libsas: 修复高可用性（HA）恢复期间的 SMP I/O 死锁 在发出 SMP（扩展器管理协议）命令之前，会调用 来唤醒主机。然而，当该 SMP 命令本身是从 HA 恢复路径发出时， 会导致死锁：它会等待正在进行的恢复操作（此时设备状态为 ），而恢复操作本身又被阻塞在 中，等待同一个 SMP I/O 完成。 此死锁需要满足特定条件：系统中必须连接了通过扩展器（expander）挂载的 SATA 磁盘。在 调用 期间， 会触发 ，进而调用 请求 。对于此
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service影响版本矩阵 17
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 9e24b47ef81d43b3fb1b14294f09991640c79fcc< c9fb89246d9922ac0a45d504adb03e0bb971310c |
affected |
3dbbbf656b850c9c8de05df6ad4a1dfc6ff02845< 08b95ef36a64c3ae4490794bed3c35d0c3354e85 |
affected | ||
3dbbbf656b850c9c8de05df6ad4a1dfc6ff02845< 81e097a064b28b4a1f6ca1a8b433e659c1bd64c0 |
affected | ||
09357f067122e2e28ec52e27013a1660a1571618 |
affected | ||
e50a6523a603594a6d92cdecfe11997d639410a3 |
affected | ||
c391b5899dd46485a5893696c12ae3e95a3a7325 |
affected | ||
b9c44a14062093e9fc2d6bddc696cfceadb482d7 |
affected | ||
6.18.44< 6.18.59 |
affected | ||
| … +9 条更多 | |||
获取后续新漏洞提醒
登录后订阅
一、 漏洞 CVE-2026-99202 基础信息
漏洞信息
对漏洞内容有疑问？看看神龙的深度分析是否有帮助！
查看神龙十问 ↗
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
scsi: libsas: Fix SMP IO deadlock during HA resume
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
scsi: libsas: Fix SMP IO deadlock during HA resume
smp_execute_task_sg() calls pm_runtime_get_sync() on the host before
issuing an SMP command. When that command is itself issued from the HA
resume path, the get_sync() deadlocks: it waits for the ongoing resume
(the device is RPM_RESUMING), while the resume is blocked in
sas_drain_work() waiting for that same SMP IO to complete.
The deadlock needs an expander-attached SATA disk. During
sas_resume_ha() -> sas_drain_work(), DISCE_RESUME -> sas_resume_sata()
-> ata_sas_port_resume() requests ATA_EH_RESET, and the hard reset for
such a disk is done via SMP PHY CONTROL (sas_ata_hard_reset() ->
sas_phy_reset() -> sas_smp_phy_control() ->
smp_execute_task_sg()). Direct-attached SATA resets through
lldd_control_phy() and SSP devices use TMFs, so neither hits this.
Replace the get_sync()/put_sync() pair with
pm_runtime_get_noresume()/pm_runtime_put(). smp_execute_task_sg() only
needs to hold off autosuspend while the SMP is in flight, and it must
not try to resume the host: a sync resume issued from the HA resume path
itself is what deadlocks, and by the time sas_resume_ha() runs, hw_init
has already reinitialized the hardware, so the device is accessible
without one.
The usage reference is still required. Discovery work normally runs
inside an event worker's PM reference, taken at sas_notify_port_event()
notify time and held until the handler has flushed the disco
queue. sas_rediscover_ex_phy() however requeues DISCE_REVALIDATE_DOMAIN
from within the revalidation worker itself, and flush_workqueue() does
not wait for work items queued during execution, so that chained
revalidation runs with no outer PM reference - without the
get_noresume(), its SMP could race autosuspend.
For the BSG path, sas_smp_handler() is the only caller which may find
the host autosuspended: expander SMP requests do not go through any SCSI
device request queue, so nothing else in that path holds the host
awake. Resume it there with pm_runtime_resume_and_get() and check the
result.
来源: CVE Program / CVE List V5
CVSS Information
N/A
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-99202 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
AI 生成 POC
高级
未找到公开 POC。
登录以生成 AI POC三、漏洞 CVE-2026-99202 的情报信息
请登录查看更多情报信息。
CVE-2026-99202 补丁与修复 (2)
同批安全公告 · Linux · 2026-10-28 · 共 117 条
| CVE-2026-99143 | Linux 内核 tracing 组件越界访问漏洞 | |
| CVE-2026-99129 | SELinux BPF 令牌权限检查漏洞 | |
| CVE-2026-99130 | Linux io_uring 拒绝服务漏洞 | |
| CVE-2026-99131 | XFS 文件系统权限检查绕过漏洞 | |
| CVE-2026-99133 | Linux 内核网络 IUCV 远程拒绝服务漏洞 | |
| CVE-2026-99132 | XFS xfs_sync_sb_buf 缓冲区锁竞争漏洞 | |
| CVE-2026-99134 | mac802154 数据竞争与空指针解引用漏洞 | |
| CVE-2026-99135 | dm-integrity 大标签丢弃无限循环漏洞 | |
| CVE-2026-99137 | CIFS 文件系统在无缓存句柄时更新 i_size 存在漏洞 | |
| CVE-2026-99136 | dm-crypt 竞态条件漏洞 | |
| CVE-2026-99138 | Linux TCP 协议栈 use-after-free 漏洞 | |
| CVE-2026-99140 | tracing 模块缓冲区事件时间戳修复 | |
| CVE-2026-99139 | TCP 协议栈 TCP_CONGESTION 选项后释放漏洞 | |
| CVE-2026-99141 | 内核 tracing 模块 print_graph_function_event 崩溃漏洞 | |
| CVE-2026-99142 | Tracing 组件栈容量检查缺失漏洞 | |
| CVE-2026-99154 | libiscsi 负任务索引拒绝漏洞 | |
| CVE-2026-99151 | AMD Display 驱动 NULL 指针解引用漏洞 | |
| CVE-2026-99153 | libiscsi 拒绝 PDU 验证逻辑漏洞 | |
| CVE-2026-99152 | libiscsi 管理响应任务验证绕过漏洞 | |
| CVE-2026-99150 | amdgpu 驱动程序资源管理漏洞 |
显示前 20 条，共 117 条。 查看全部 → →