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CVE-2026-31770: 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: hwmon: (occ) Fix division by zero in occ_show_power_1() In occ_show_power_1() case 1, the accumulator is divided by update_tag without checking for zero. If no samples have been collected yet (e.g. during early boot when the sensor block is included but hasn't been updated), update_tag is zero, causing a kernel divide-by-zero crash. The 2019 fix in commit 211186cae14d ("hwmon: (occ) Fix division by zero issue") only addressed occ_get_powr_avg() used by occ_show_power_2() and occ_show_power_a0(). This separate code path in occ_show_power_1() was missed. Fix this by reusing the existing occ_get_powr_avg() helper, which already handles the zero-sample case and uses mul_u64_u32_div() to multiply before dividing for better precision. Move the helper above occ_show_power_1() so it is visible at the call site. [groeck: Fix alignment problems reported by checkpatch]

    Засегнати продукти

    • Linux Linux: c10e753d43ebd1d17e1c62bcee20c6124c2c7cca преди c7d3712362c8ab8f82f441b649d9e446e7b9aa9d; c10e753d43ebd1d17e1c62bcee20c6124c2c7cca преди 53e6175756b8c474b6247bbcea0aad3d68357475; c10e753d43ebd1d17e1c62bcee20c6124c2c7cca преди 2502684b9e835de9a992ec47c3e6c6faabe3858d; c10e753d43ebd1d17e1c62bcee20c6124c2c7cca преди 37ae8fadc74ed68e5bc364ffd17746d88e449ae3; c10e753d43ebd1d17e1c62bcee20c6124c2c7cca преди bbbefc48f6617cfb738dcff7f44beb50b5dfeb38; c10e753d43ebd1d17e1c62bcee20c6124c2c7cca преди 243d55bd3f08cb15eee9d63f4716d4d4cdd760f5; c10e753d43ebd1d17e1c62bcee20c6124c2c7cca преди 7b89ce0c98bf3015f493ca4285b2d1056cd8c733; c10e753d43ebd1d17e1c62bcee20c6124c2c7cca преди 39e2a5bf970402a8530a319cf06122e216ba57b8
    • Linux Linux: 5.0; преди 5.0; 5.10.253 до 5.10.*; 5.15.203 до 5.15.*; 6.1.168 до 6.1.*; 6.6.134 до 6.6.*; 6.12.81 до 6.12.*; 6.18.22 до 6.18.*; 6.19.12 до 6.19.*; от 7.0 нататък

    История

    • 1 май 2026 Публикувано

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