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CVE-2026-31607: Linux, грешка в паметта

9.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: usbip: validate number_of_packets in usbip_pack_ret_submit() When a USB/IP client receives a RET_SUBMIT response, usbip_pack_ret_submit() unconditionally overwrites urb->number_of_packets from the network PDU. This value is subsequently used as the loop bound in usbip_recv_iso() and usbip_pad_iso() to iterate over urb->iso_frame_desc[], a flexible array whose size was fixed at URB allocation time based on the *original* number_of_packets from the CMD_SUBMIT. A malicious USB/IP server can set number_of_packets in the response to a value larger than what was originally submitted, causing a heap out-of-bounds write when usbip_recv_iso() writes to urb->iso_frame_desc[i] beyond the allocated region. KASAN confirmed this with kernel 7.0.0-rc5: BUG: KASAN: slab-out-of-bounds in usbip_recv_iso+0x46a/0x640 Write of size 4 at addr ffff888106351d40 by task vhci_rx/69 The buggy address is located 0 bytes to the right of allocated 320-byte region [ffff888106351c00, ffff888106351d40) The server side (stub_rx.c) and gadget side (vudc_rx.c) already validate number_of_packets in the CMD_SUBMIT path since commits c6688ef9f297 ("usbip: fix stub_rx: harden CMD_SUBMIT path to handle malicious input") and b78d830f0049 ("usbip: fix vudc_rx: harden CMD_SUBMIT path to handle malicious input"). The server side validates against USBIP_MAX_ISO_PACKETS because no URB exists yet at that point. On the client side we have the original URB, so we can use the tighter bound: the response must not exceed the original number_of_packets. This mirrors the existing validation of actual_length against transfer_buffer_length in usbip_recv_xbuff(), which checks the response value against the original allocation size. Kelvin Mbogo's series ("usb: usbip: fix integer overflow in usbip_recv_iso()", v2) hardens the receive-side functions themselves; this patch complements that work by catching the bad value at its source -- in u

Засегнати продукти

  • Linux Linux: 1325f85fa49f57df034869de430f7c302ae23109 преди 324262c38438255bf6bdbf6342ca47c0badaab76; 1325f85fa49f57df034869de430f7c302ae23109 преди 973f2c250289f5bf6cc146b98aa6fdde11fe50d6; 1325f85fa49f57df034869de430f7c302ae23109 преди ce744264b06b97069b3722511ab355738311fee0; 1325f85fa49f57df034869de430f7c302ae23109 преди 885c8591784da6314f9aa82fa460ac69f9f79e5f; 1325f85fa49f57df034869de430f7c302ae23109 преди 8d155e2d1c4102f74f82a2bf9c016164bb0f7384; 1325f85fa49f57df034869de430f7c302ae23109 преди 906f16a836de13fe61f49cdce2f66f2dbd14caf4; 1325f85fa49f57df034869de430f7c302ae23109 преди ef8ebb1c637b4cfb61a9dd2e013376774ee2033b; 1325f85fa49f57df034869de430f7c302ae23109 преди 5e1c4ece08ccdc197177631f111845a2c68eede3; 1325f85fa49f57df034869de430f7c302ae23109 преди 2ab833a16a825373aad2ba7d54b572b277e95b71; d9638d9236eed035a575feddec61d036dacc2676; ca7d3501b7a287c18b5b470e871d3029b0f4842a; 1ce528277e1a66856ed3f7526c1e3458c0ed4a70; db898d0c5c493ce4177d5e1d3a953e079a56a24b; 5aa02704b9ee67c5b2ee26d54c5f4eb99e93ba9a; 2.6.32.37 преди 2.6.33; 2.6.33.10 преди 2.6.34; 2.6.34.11 преди 2.6.35; 2.6.35.13 преди 2.6.36; 2.6.38.3 преди 2.6.39
  • Linux Linux: 2.6.39; преди 2.6.39; 5.10.258 до 5.10.*; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.136 до 6.6.*; 6.12.83 до 6.12.*; 6.18.24 до 6.18.*; 6.19.14 до 6.19.*; 7.0.1 до 7.0.*; от 7.1 нататък
  • Red Hat: още 7 продукта, добавени от Red Hat

    Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.6 Extended Update Support, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8

Вид слабост

История

  • 24 април 2026 Публикувано

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