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CVE-2026-99039: 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: memstick: core: wait for request completion before freeing card In memstick_alloc_card() and memstick_set_rw_addr(), wait_for_completion_timeout() is used to wait for device identification and address configuration requests to complete. The memstick subsystem does not provide an abort or cancellation callback in struct memstick_host for in-flight requests. If wait_for_completion_timeout() expires (for instance, when a USB transfer or command retry is delayed), memstick_alloc_card() returns an error and frees the memstick_dev structure via kfree(card). However, the host controller driver (such as rtsx_usb_ms) is still running the request asynchronously in worker context. When the transfer eventually finishes, the driver writes into host->req->data, which points to memory inside the already freed card structure. This leads to a KASAN slab-use-after-free write: BUG: KASAN: slab-use-after-free in ms_read_bytes+0x8fe/0x990 Write of size 1 at addr ffff88813c188079 by task kworker/1:5/5239 Workqueue: events rtsx_usb_ms_handle_req Call Trace: ms_read_bytes+0x8fe/0x990 drivers/memstick/host/rtsx_usb_ms.c:450 rtsx_usb_ms_issue_cmd drivers/memstick/host/rtsx_usb_ms.c:477 [inline] rtsx_usb_ms_handle_req+0x557/0x1a00 drivers/memstick/host/rtsx_usb_ms.c:531 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560 kthread+0x373/0x450 kernel/kthread.c:436 Allocated by task 1662: memstick_alloc_card drivers/memstick/core/memstick.c:383 [inline] memstick_check+0x2c1/0x10d0 drivers/memstick/core/memstick.c:452 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396 Freed by task 1662: kfree+0x20c/0x650 mm/slub.c:6792 memstick_alloc_card drivers/memstick/core/memstick.c:420 [inline] memstick_check+0x72b/0x10d0 drivers/memstick/core/memstick.c:452 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396 Host controller d

    Засегнати продукти

    • Linux Linux: baf8532a147d5b76681ce040e2c8f25a3f0e718d преди b90f33ad9179c69658342323382bfed158f88cb9; baf8532a147d5b76681ce040e2c8f25a3f0e718d преди 1c23da6f148089d59b3d3e9b2e7f1eefa927cab9; baf8532a147d5b76681ce040e2c8f25a3f0e718d преди a2f1aa3341f185ca52103dc4908647570b208855; baf8532a147d5b76681ce040e2c8f25a3f0e718d преди c3ab92542475d59ae685cbb294e70ca4d0ba38e9; baf8532a147d5b76681ce040e2c8f25a3f0e718d преди 810580cf60edc75c9891c2de3225e4cda78e4d9f; baf8532a147d5b76681ce040e2c8f25a3f0e718d преди f2795c50144d528dabc2cf2fd53c0f0c63a823a1; baf8532a147d5b76681ce040e2c8f25a3f0e718d преди 3af81770e2011c6ac7bb597a4af2e4f3591f928c; baf8532a147d5b76681ce040e2c8f25a3f0e718d преди aa0a37b5024d921e96ac4f8f487c8bfbf1f1a582
    • Linux Linux: 2.6.25; преди 2.6.25; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.113 до 6.12.*; 6.18.57 до 6.18.*; 7.2.11 до 7.2.*; от 7.3 нататък

    История

    • 23 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-99039: Linux | freedomonline.bg