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CVE-2026-80931: Linux

7.8

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 локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: w1: ds28e17: reject an oversize length on an I2C block read w1_f19_i2c_master_transfer() is the master_xfer for the DS28E17 1-Wire to I2C bridge. On an I2C_M_RECV_LEN read, it takes the length from the device. The downstream slave puts a length byte in buf[0]. The driver then reads that many bytes into buf[1] with w1_f19_i2c_read(). buf[0] is controlled by the device and can be 0 to 255. w1_f19_i2c_read() only rejects a zero count. The caller buffer is I2C_SMBUS_BLOCK_MAX + 2, so 34 bytes. A length above 32 makes the read run past it, up to about 222 bytes out of bounds. The SMBus core does check buf[0] against I2C_SMBUS_BLOCK_MAX. That check runs after master_xfer returns. By then the write is already done. i2c-algo-bit rejects an oversize length before it copies, and returns -EPROTO. Reject a length above I2C_SMBUS_BLOCK_MAX at both RECV_LEN sites, the same way i2c-algo-bit does.

    Засегнати продукти

    • Linux Linux: ebc4768ac4971eab4b570e733e47ac9dfd0e4175 преди b30c021c6073559ea6851b522d8a17a524a27b4a; ebc4768ac4971eab4b570e733e47ac9dfd0e4175 преди 1d08877fc37e90945df38d255715bd1d6c052d46; ebc4768ac4971eab4b570e733e47ac9dfd0e4175 преди bf76d61e118b7044600a65775a3bf8adc2c6823d; ebc4768ac4971eab4b570e733e47ac9dfd0e4175 преди 0f6496b34cc2919420f303b2aabdd9f71e084b56; ebc4768ac4971eab4b570e733e47ac9dfd0e4175 преди cb55c5da9828f77db2a2701316949d4de1e9b773; ebc4768ac4971eab4b570e733e47ac9dfd0e4175 преди ae0c79a8527044e54d81fd5a3b49ce6177633758; ebc4768ac4971eab4b570e733e47ac9dfd0e4175 преди 6df05f630c84a109736642362e452089886f9974; ebc4768ac4971eab4b570e733e47ac9dfd0e4175 преди 169ae5e65e5aaf213b6a578f6478a9fd2e523606
    • Linux Linux: 4.15; преди 4.15; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

    История

    • 11 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-80931: Linux | freedomonline.bg