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CVE-2026-98677: Linux

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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: iio: adc: ad_sigma_delta: fix use-after-free on unbind ad_sd_buffer_postenable() allocates sigma_delta->samples_buf with devm_krealloc() at runtime, so its devres entry sits after all probe-time entries of the driver. devm resources are released in reverse allocation order, which means unbind frees samples_buf before iio_device_unregister() disables the buffers and detaches the trigger pollfunc. The data ready IRQ is still enabled at that point, so ad_sd_trigger_handler() can still run and memcpy() incoming samples into the freed samples_buf. Fix this by preallocating the buffer in devm_ad_sd_setup_buffer_and_trigger(), before the triggered buffer and the IRQ are set up, so it is freed only after iio_device_unregister() has drained the trigger handler via free_irq(). Size it for the worst case of all sequencer slots being active; ad_sd_validate_scan_mask() already caps the number of active channels at num_slots. This issue was found by an in-house static analysis tool.

    Засегнати продукти

    • Linux Linux: 8bea9af887de4c99a95f93f2ce400ef63e8b4e9b преди b2a991d33f1e2207052fe745d1fe459db8b365e2; 8bea9af887de4c99a95f93f2ce400ef63e8b4e9b преди 975b09bc680acc60903777b766cdb53b0bf9c9f6; 8bea9af887de4c99a95f93f2ce400ef63e8b4e9b преди 84500ae0d976995a6870cb1dca2d124b6b2d6e5a; 8bea9af887de4c99a95f93f2ce400ef63e8b4e9b преди f20b94a7dc1ff9ade191ce839c984210fdbdc653; 8bea9af887de4c99a95f93f2ce400ef63e8b4e9b преди 5663c72bf400231e90777982216797191887a6b9; 8bea9af887de4c99a95f93f2ce400ef63e8b4e9b преди 9ee8306121495d2a25aa5d1bfd519f2748786b83
    • Linux Linux: 5.19; преди 5.19; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.113 до 6.12.*; 6.18.56 до 6.18.*; 7.2.10 до 7.2.*; 7.3 до *

    История

    • 18 октомври 2026 Публикувано

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    Първоизточници

    CVE-2026-98677: Linux | freedomonline.bg