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CVE-2026-98767: Linux

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CVSS

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Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

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    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: gadget: fix IRQ storm on invalid event buffer count When dwc3_check_event_buf() reads a GEVNTCOUNT value exceeding the event buffer length, commit 63ccd26cd1f6 ("usb: dwc3: gadget: check that event count does not exceed event buffer length") returns IRQ_NONE without writing back GEVNTCOUNT. Since the DWC3 interrupt is level-triggered, the uncleared IRQ source keeps the line asserted, causing a tight IRQ storm that accumulates 99,900 unhandled interrupts and triggers spurious.c:184 BUG -> kernel panic. The resulting call stack: __report_bad_irq+0xac/0xc8 note_interrupt+0x340/0x468 handle_irq_event+0xac/0xc0 handle_fasteoi_irq+0x120/0x228 gic_handle_irq+0x68/0x108 ... kernel BUG at kernel/irq/spurious.c:184 To reproduce, write a bogus value exceeding the event buffer length directly to the GEVNTCOUNT register: devmem <DWC3_BASE + 0xc40c> 4 0x1004 Write the bogus count back to GEVNTCOUNT to clear the IRQ source, consistent with the stale event clearing pattern in dwc3_event_buffers_setup(), and schedule error recovery to reinitialize the controller.

    Засегнати продукти

    • Linux Linux: c0079630f268843a25ed75226169cba40e0d8880 преди 2c41e442ff6304532bf369aa618b23c8a474feb4; a44547015287a19001384fe94dbff84c92ce4ee1 преди 86b9c867fb061a147df05ff0d9bb69dd3d79f49a; c4d80e41cb42008dceb35e5dbf52574d93beac0d преди 6cd82563bb270e03fe2f91324660ea14e3ce5d1a; 52a7c9d930b95aa8b1620edaba4818040c32631f преди 96918ca25ff467c25675478fc79393df4ae9d74c; 63ccd26cd1f6600421795f6ca3e625076be06c9f преди ba927133b301894e7d24099afbb701887c8cd2f1; 63ccd26cd1f6600421795f6ca3e625076be06c9f преди f51cadb02b439850ab411df0a2cf4288a66d42e2; 63ccd26cd1f6600421795f6ca3e625076be06c9f преди 1ff77cbefe5a653ea12874c213ea4bd0d72c1067; 015c39f38e69a491d2abd5e98869a500a9459b3b; b43225948b231b3f331194010f84512bee4d9f59; 99d655119b870ee60e4dbf310aa9a1ed8d9ede3d; 5.15.181 преди 5.15.224; 6.1.136 преди 6.1.191; 6.6.89 преди 6.6.160; 6.12.26 преди 6.12.113; 5.4.293 преди 5.5; 5.10.237 преди 5.11; 6.14.5 преди 6.15
    • Linux Linux: 6.15; преди 6.15; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.113 до 6.12.*; 6.18.56 до 6.18.*; 7.2.10 до 7.2.*; от 7.3 нататък

    История

    • 18 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98767: Linux | freedomonline.bg