CVE-2026-98859— Linux HID 多触摸驱动移除时计时器重设漏洞
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： HID：多点触控（multitouch）：在移除设备时，停止释放定时器（release timer）的重新武装（rearm）。 函数在停止硬件之前，会先使“粘滞手指”（sticky-finger）定时器进入静默状态： 会等待正在运行的回调函数执行完毕，并将定时器从队列中移除，但它并不能阻止该定时器被再次武装。此时，传输层仍在传递报告（reports），而报告处理路径会重新武装该定时器： 因此，在 返回之后到达的报告，会导致定时器再次被加入队列。 结构体是通过 为 分配的
可能的 ATT&CK 技术 1 AI
T1068 · Exploitation for Privilege Escalation影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | 4f4001bc76fd1a138a501fbd3d68cce72cbf96ce< 1f1bd9a3117f082eb891c0986c4f0e04cd974c9a |
affected |
4f4001bc76fd1a138a501fbd3d68cce72cbf96ce< 0c19a6c1d25fd5ed66d1f80dc6f6e56cc1f0a787 |
affected | ||
4f4001bc76fd1a138a501fbd3d68cce72cbf96ce< a0125ca86e405b8a704e96157a6c10ca51087652 |
affected | ||
4f4001bc76fd1a138a501fbd3d68cce72cbf96ce< 5acb2dace582f061aab5e14c399ac9480315f44b |
affected | ||
4.13 |
affected | ||
< 4.13 |
unaffected | ||
6.12.113≤ 6.12.* |
unaffected | ||
6.18.56≤ 6.18.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2026-98859 基础信息
漏洞信息
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Vulnerability Title
HID: multitouch: stop the release timer from being rearmed on remove
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
HID: multitouch: stop the release timer from being rearmed on remove
mt_remove() quiesces the sticky-finger timer before stopping the
hardware:
timer_delete_sync(&td->release_timer);
sysfs_remove_group(&hdev->dev.kobj, &mt_attribute_group);
hid_hw_stop(hdev);
timer_delete_sync() waits for a running callback and dequeues the timer,
but it does not stop the timer from being armed again. The transport is
still delivering reports at that point, and the report path rearms it:
if (app->quirks & MT_QUIRK_STICKY_FINGERS) {
if (td->mt_io_flags & MT_IO_SLOTS_MASK)
mod_timer(&td->release_timer,
jiffies + msecs_to_jiffies(100));
A report that arrives after timer_delete_sync() has returned therefore
leaves the timer queued. td is allocated with devm_kzalloc() against
hdev->dev, so it is freed when the driver is unbound, after mt_remove()
returns. When the timer fires afterwards, mt_expired_timeout()
dereferences the freed td:
struct mt_device *td = timer_container_of(td, t, release_timer);
struct hid_device *hdev = td->hdev;
if (test_and_set_bit_lock(MT_IO_FLAGS_RUNNING, &td->mt_io_flags))
Simply moving the teardown after hid_hw_stop() does not fix this on its
own, because mt_expired_timeout() calls mt_release_contacts(), which
walks hdev->inputs; the timer still has to be quiesced before
hid_hw_stop() tears the input devices down.
Use timer_shutdown_sync() instead, which additionally makes any later
mod_timer() a no-op, so neither ordering constraint has to be traded off
against the other. This is the final-teardown pattern the function was
introduced for, and hid-wiimote already uses it for the same reason.
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-2026-98859 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-98859 补丁与修复 (4)
同批安全公告 · Linux · 2026-10-18 · 共 436 条
| CVE-2026-98582 | ST21NFCA NFC 驱动接收帧大小验证漏洞 | |
| CVE-2026-98568 | Linux vxlan 邻居回复内存使用漏洞 | |
| CVE-2026-98570 | Linux IPv6 子网路由表项处理信息泄露漏洞 | |
| CVE-2026-98571 | stmmac 驱动 skb 构建失败后内存泄漏漏洞 | |
| CVE-2026-98572 | bpf MIPS32 JEQ/JNE 跳转指令逻辑漏洞 | |
| CVE-2026-98573 | Linux 内核 IPv6 校验和计算整数下溢漏洞 | |
| CVE-2026-98574 | bcmgenet 网络驱动 NAPI 停止前禁用队列漏洞 | |
| CVE-2026-98575 | pn533 NFC 驱动越界读取漏洞 | |
| CVE-2026-98576 | Linux NFC LLCP 服务名日志越界读漏洞 | |
| CVE-2026-98577 | NFC LLCP 模块 WKS SAP 劫持漏洞 | |
| CVE-2026-98578 | Linux st21nfca ISO15693 库存长度验证漏洞 | |
| CVE-2026-98579 | NFC LLCP SDreq TLV 列表泄露漏洞 | |
| CVE-2026-98580 | Linux NFC LLCP 接受队列生命周期竞态条件漏洞 | |
| CVE-2026-98581 | NFC LLCP nfc_llcp_recv_dm 列表损坏/引用计数不同步 | |
| CVE-2026-98593 | Linux s390 调试功能空指针解引用漏洞 | |
| CVE-2026-98590 | bpf 上下文代码生成逻辑修复 | |
| CVE-2026-98591 | bpf skb 动态指针越界漏洞 | |
| CVE-2026-98592 | Spacemit 网络驱动传输描述符处理漏洞 | |
| CVE-2026-98589 | bpf 子程序拒绝 pkt 参数 | |
| CVE-2026-98594 | tg3 驱动 PHYLIB 资源清理漏洞 |
显示前 20 条，共 436 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-98859
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