CVE-2026-97603— idpf：释放q_vectors前禁用DIM工作
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，以下漏洞已被修复： idpf：在释放 q_vectors 之前禁用 DIM 工作项 idpf 驱动程序在释放 DIM（Dynamic Interrupt Moderation，动态中断调节）工作项所驻留的内存之前，从未清空（drain）Tx/Rx DIM 工作项。 和 嵌入在 结构中，它们通过 在 NAPI 轮询过程中被调度。而 以 结束。驱动程序中没有任何代码取消这些工作项。 因此， 和 会在已释放的内存上执行： 通过从已释放的 中加载的 指针（即 ）写入 ITR 寄存器。无需任何特殊配置
影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | c2d548cad1508d334517bcbd7cd5c915cc831fc0< 7d64d4c6bb6bb63b6cdb7de133c3ec48333b27b5 |
affected |
c2d548cad1508d334517bcbd7cd5c915cc831fc0< 7e4312953788244d47074987d40d76702cf929f1 |
affected | ||
c2d548cad1508d334517bcbd7cd5c915cc831fc0< cd7a1598645b6917a8676b7e2efe8d97ce68a952 |
affected | ||
c2d548cad1508d334517bcbd7cd5c915cc831fc0< 7dd4c829bac2916be98a3e34b41daaba7f42b4c4 |
affected | ||
6.7 |
affected | ||
< 6.7 |
unaffected | ||
6.12.112≤ 6.12.* |
unaffected | ||
6.18.53≤ 6.18.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2026-97603 基础信息
漏洞信息
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Vulnerability Title
idpf: disable DIM work before freeing q_vectors
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
idpf: disable DIM work before freeing q_vectors
idpf never drains the Tx/Rx DIM works before freeing the memory they
live in. tx_dim and rx_dim are embedded in struct idpf_q_vector, they
are queued from the NAPI poll via net_dim(), and idpf_vport_intr_rel()
ends with kfree(rsrc->q_vectors). Nothing in the driver cancels them.
idpf_tx_dim_work() and idpf_rx_dim_work() then run on freed memory:
idpf_vport_intr_write_itr() writes the ITR register through
q_vector->intr_reg.tx_itr / rx_itr, void __iomem pointers loaded out of
the freed q_vector. No configuration is needed to get there --
IDPF_ITR_IS_DYNAMIC() is defined as (itr_mode) and idpf_vport_alloc()
initialises both modes to IDPF_ITR_DYNAMIC.
Draining after idpf_vport_intr_napi_dis_all() is not enough on its own.
idpf_net_dim() is called from inside the
"if (napi_complete_done(napi, work_done))" branch of the poll, and
napi_complete_done() has already cleared NAPIF_STATE_SCHED by then.
napi_disable_locked() waits only while (val & (NAPIF_STATE_SCHED |
NAPIF_STATE_NPSVC)), so napi_disable() can return while the poll tail is
still queueing the work, and a plain cancel_work_sync() would be
re-armed behind the drain.
Use disable_work_sync(): schedule_work() on a work with a non-zero
disable count is dropped by clear_pending_if_disabled() before
__queue_work() is reached.
Move idpf_init_dim() to idpf_vport_intr_alloc() so the works are
initialised on every path that can reach the drain -- the three
"goto intr_deinit" sites between idpf_vport_intr_init() and
idpf_vport_intr_ena() get there without the enable side having run.
Nothing re-enables them: rsrc->q_vectors is freed on every exit from
idpf_vport_open() and on every idpf_vport_stop(), so the count dies with
the object.
It is a race, not a deterministic failure -- net_dim() only schedules
once DIM_NEVENTS events have accumulated and the profile index changes.
A KASAN ifup/ifdown loop under load is the way to see it.
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-2026-97603 的公开POC
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CVE-2026-97603 补丁与修复 (4)
同批安全公告 · Linux · 2026-09-25 · 共 372 条
| CVE-2026-100075 | 9.8 CRITICAL | RDMA/srpt：srpt_alloc_rw_ctxs() 未释放计数器修复 |
| CVE-2026-97957 | 8.8 HIGH | hinic 邮箱段缓冲区溢出漏洞 |
| CVE-2026-97527 | 8.8 HIGH | qla2xxx SCSI驱动程序 NVMe未解决上下文列表竞争条件漏洞 |
| CVE-2026-97528 | 8.8 HIGH | QLogic qla2xxx驱动LS拒绝错误NVMe内存泄漏漏洞 |
| CVE-2026-97555 | 8.8 HIGH | smb客户端：修复DACL所有者/组重写中的堆溢出漏洞 |
| CVE-2026-98115 | 8.8 HIGH | ksmbd 注销期间会话安全排空漏洞 |
| CVE-2026-97525 | 8.2 HIGH | x86/mm/pat：内核页表分裂页表分配漏洞 |
| CVE-2026-97573 | 8.1 HIGH | bnxt_en 驱动 bnxt_rx_ring_reset 缓冲区分配失败漏洞 |
| CVE-2026-97570 | 8.1 HIGH | bnxt_en: 修复因SW TPA ID绑定问题导致的崩溃漏洞 |
| CVE-2026-98070 | 8.1 HIGH | Linux RDS 模块远程代码执行漏洞 |
| CVE-2026-98069 | 8.1 HIGH | Net/RDS rds_conn_shutdown() 快速路径锁获取漏洞 |
| CVE-2026-98130 | 8.1 HIGH | SCTP定时器启动竞争条件漏洞 |
| CVE-2026-98116 | 7.8 HIGH | ALSA: PCM内存映射与缓冲区重新分配序列化以修复页面UAF漏洞 |
| CVE-2026-97903 | 7.8 HIGH | exit: proc_flush_pid 线程 PID 持引越界漏洞 |
| CVE-2026-97548 | 7.8 HIGH | XFS rtrmap和rtrefcount _maxlevels_ondisk函数漏洞 |
| CVE-2026-97611 | 7.8 HIGH | Open vSwitch 使用后释放漏洞 |
| CVE-2026-97612 | 7.8 HIGH | MPLS 协议栈在弹出标签时未清除 inner_protocol |
| CVE-2026-98073 | 7.8 HIGH | Linux 内核网络命名空间更改竞态条件漏洞 |
| CVE-2026-97602 | 7.8 HIGH | Linux内核inet模块队列失效前刷新漏洞 |
| CVE-2026-97577 | 7.8 HIGH | Rockchip RK3588 媒体引擎 AV1 帧容量超限漏洞 |
显示前 20 条，共 372 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-97603
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