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CVE-2026-98683: 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: smb: client: flush dirty data before zeroing a range smb3_zero_range() emulates FALLOC_FL_ZERO_RANGE by invalidating the page cache over the target range with truncate_pagecache_range() and then issuing FSCTL_SET_ZERO_DATA to the server. Dirty data was only flushed conditionally, when the range reached or extended EOF. For a purely interior zero range that does not reach EOF, no flush happened, so a dirty folio overlapping the range could be written back to the server after the FSCTL and refill the range that was just zeroed with stale data. Fix this by unconditionally flushing and waiting for dirty data in the range before invalidating the page cache and issuing FSCTL_SET_ZERO_DATA, exactly as was done for smb3_punch_hole() in commit d7d2adcd022b ("smb/client: flush dirty data before punching a hole"); the two paths are structurally identical here. This is observed as generic/363 randomly reading stale data where a zeroed range is expected against Windows Server.

    Засегнати продукти

    • Linux Linux: 91d1dfae464987aaf6c79ff51d8674880fb3be77 преди cecf4114069fc19629d284710fd783d56bbca862; 91d1dfae464987aaf6c79ff51d8674880fb3be77 преди e8ba21c7e6ef3d4cb617858760673877b2e4a2bb; 91d1dfae464987aaf6c79ff51d8674880fb3be77 преди 8f8d32c1044f70e46e87550e039a15ff20a4b21c; 13af7446428771e9e529284d390e7994df8be683; 0a9423f99ded38b32bd1864347332cc557e6b141; 7dfa4279c55f467a88e653a5d544817181b22aea; 6.1.110 преди 6.2; 6.6.51 преди 6.7; 6.10.10 преди 6.11
    • Linux Linux: 6.11; преди 6.11; 6.18.56 до 6.18.*; 7.2.10 до 7.2.*; от 7.3 нататък

    История

    • 18 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98683: Linux | freedomonline.bg