CVE-2026-89625— Linux kernel 安全漏洞
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。
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 5.11版本存在安全漏洞，该漏洞源于驱动解绑时未正确销毁ghl_poke_timer和ghl_urb，timer_delete_sync()无法阻止URB完成回调重新武装定时器，可能导致定时器在已释放内存上触发，造成释放后重用。
影响版本矩阵 10
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | cc894ac553605c9193a7a94372ff2f8af5766f46< 0e3d42ef008f0931e3878b4f1b046b6e45a95bde |
affected |
cc894ac553605c9193a7a94372ff2f8af5766f46< 114a58640aaf3c2eb97b5b01c75ab5e541d15d9c |
affected | ||
cc894ac553605c9193a7a94372ff2f8af5766f46< 3155dc327344d286f17345cd371be05e255a4328 |
affected | ||
cc894ac553605c9193a7a94372ff2f8af5766f46< a26705bd2e2728833e7a538ce91e58a5eeff496a |
affected | ||
5.11 |
affected | ||
< 5.11 |
unaffected | ||
6.12.111≤ 6.12.* |
unaffected | ||
6.18.50≤ 6.18.* |
unaffected | ||
| … +2 条更多 | |||
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一、 漏洞 CVE-2026-89625 基础信息
漏洞信息
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Vulnerability Title
HID: sony: fix UAF of ghl_poke_timer / ghl_urb at driver unbind
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
HID: sony: fix UAF of ghl_poke_timer / ghl_urb at driver unbind
For GHL (Guitar Hero Live) dongles, sony_probe() arms a periodic timer:
ghl_magic_poke() (the timer callback) submits sc->ghl_urb, and the URB
completion ghl_magic_poke_cb() re-arms the timer with mod_timer().
sony_remove() drained the timer with timer_delete_sync() and then freed
the URB with usb_free_urb():
timer_delete_sync(&sc->ghl_poke_timer);
usb_free_urb(sc->ghl_urb);
timer_delete_sync() does not block re-arming, and while the URB is in
flight the timer is not pending, so the sync delete is a no-op. A URB
completion that runs after the delete re-arms the timer, and usb_free_urb()
only drops a reference -- it does not kill an in-flight URB. sc is
allocated with devm_kzalloc() and freed once sony_remove() returns, so the
re-armed ghl_poke_timer (embedded in sc) then fires on freed memory, a
use-after-free from timer softirq. This is a disconnect/rmmod race.
Poison the URB first, then shut the timer down, before freeing the URB.
usb_poison_urb() kills any in-flight URB and permanently rejects further
submissions, so a poke timer that is still pending cannot re-submit the
URB from ghl_magic_poke() in the window before timer_shutdown_sync() runs.
usb_kill_urb() would not suffice: it only cancels the in-flight URB and
leaves it submittable once it returns, so the pending timer could
re-submit it and put a fresh URB in flight over the freed sc.
timer_shutdown_sync() then drains any last callback and blocks re-arming.
The probe error path is unaffected: it is only reached before the timer
is armed.
Reproduced under KASAN on next-20260710 via dummy_hcd + raw-gadget
emulation of the GHL PS4 dongle (VID 0x1430 / PID 0x07bb): hid-sony binds
and arms the poke timer, the poke URB is held in flight, the driver is
unbound (freeing sc), then the URB is released. The completion re-arms the
timer on the freed sc, and the re-armed timer fires ~8 s later:
BUG: KASAN: slab-use-after-free in ghl_magic_poke+0x98/0xb0
Read of size 8 at addr ffff88810b02fd50 by task swapper/0/0
ghl_magic_poke+0x98/0xb0
call_timer_fn+0x35/0x2b0
__run_timers+0x69c/0x9a0
run_timer_softirq+0x173/0x2a0
Allocated by task 169: sony_probe
Freed by task 338: devres_release_group <- hid_device_remove (sony_remove)
Found by 0sec (https://0sec.ai) using automated source analysis.
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
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel 5.11版本存在安全漏洞，该漏洞源于驱动解绑时未正确销毁ghl_poke_timer和ghl_urb，timer_delete_sync()无法阻止URB完成回调重新武装定时器，可能导致定时器在已释放内存上触发，造成释放后重用。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2026-89625 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-89625 补丁与修复 (3)
CVE-2026-89625 其他参考 (1)
同批安全公告 · Linux · 2026-09-11 · 共 431 条
| CVE-2026-89688 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89656 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89655 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89658 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89660 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89659 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89662 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89669 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89674 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89675 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89676 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89677 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89681 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89686 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89703 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89479 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89478 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89702 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89482 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2026-89708 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
显示前 20 条，共 431 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2026-89625
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