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CVE-2026-74508: Linux

8.8

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 от съседна мрежа, без особени условия, без вход и без действие от потребителя.

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

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: reject frames without a transaction header hidp_recv_ctrl_frame() and hidp_recv_intr_frame() read skb->data[0] before checking that the L2CAP SDU contains a transaction header. A connected HIDP peer can send an empty basic-mode SDU and make both paths use an uninitialized byte from skb tailroom. KMSAN reports the use in hidp_session_run(), with the uninitialized value originating in __alloc_skb() through vhci_write(). The control path produces two reports and the interrupt path produces one. The byte can also be controlled by a malformed lower-layer packet. If an HCI ACL packet contains an L2CAP PDU with a declared zero-length payload followed by an extra 0x15 byte, l2cap_recv_acldata() reduces skb->len to the declared PDU length before dispatch. The current HIDP path nevertheless consumes the extra byte as HIDP_TRANS_HID_CONTROL | HIDP_CTRL_VIRTUAL_CABLE_UNPLUG and terminates the HIDP session. With this change, the same packet is discarded and a subsequent feature report request succeeds. Pull the transaction header with skb_pull_data() and discard frames that do not contain it.

Засегнати продукти

  • Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 24c64ccd5c1fc9934b427335b0d976c7f2b1a7d8; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 238c333bc4b3f245c626632e8bfa3c9dab97f51b; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 567a2a0a633f2ea5fdccaf3517c09f22c9d860c7; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 46ca5ab39737d7c6f9ca77ecf714cdcfa6caaeec; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 97b61241ab45bfa5b0526cb0f3978942493bc811; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 2ebf63aa557a69990b4e9ea22be224d58aabce96; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 854194494a6f726a60b90b76059148bf08df023d; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 47778d2c2087b5d192398f6fddf692d16a5431cf
  • Linux Linux: 2.6.12; преди 2.6.12; 5.10.266 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.151 до 6.6.*; 6.12.103 до 6.12.*; 6.18.44 до 6.18.*; 7.1.8 до 7.1.*; от 7.2 нататък

История

  • 15 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-74508: Linux | freedomonline.bg