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CVE-2026-46040: 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: inotify: fix watch count leak when fsnotify_add_inode_mark_locked() fails When fsnotify_add_inode_mark_locked() fails in inotify_new_watch(), the error path calls inotify_remove_from_idr() but does not call dec_inotify_watches() to undo the preceding inc_inotify_watches(). This leaks a watch count, and repeated failures can exhaust the max_user_watches limit with -ENOSPC even when no watches are active. Prior to commit 1cce1eea0aff ("inotify: Convert to using per-namespace limits"), the watch count was incremented after fsnotify_add_mark_locked() succeeded, so this path was not affected. The conversion moved inc_inotify_watches() before the mark insertion without adding the corresponding rollback. Add the missing dec_inotify_watches() call in the error path.

    Засегнати продукти

    • Linux Linux: 1cce1eea0aff51201753fcaca421df825b0813b6 преди 3ab58cf42c46bf2366d2f55ae5c59299d5e178b7; 1cce1eea0aff51201753fcaca421df825b0813b6 преди 10edf7e0ffdc7faa18e2244b17722c1b882b8273; 1cce1eea0aff51201753fcaca421df825b0813b6 преди 3ad9ccea1b25435f6179b57aa891960beb7ce8f9; 1cce1eea0aff51201753fcaca421df825b0813b6 преди 8bcc1cd237ab5ccfdd102869fa031c541943cf40; 1cce1eea0aff51201753fcaca421df825b0813b6 преди 73ddc8518a32baff6bc17afda4ee1ebae5b4ed12; 1cce1eea0aff51201753fcaca421df825b0813b6 преди fdaa42ca370d056428e5e171247c8fdce8dff36a; 1cce1eea0aff51201753fcaca421df825b0813b6 преди 9e48844f708eb48bae4e79cb21edc097c966306d; 1cce1eea0aff51201753fcaca421df825b0813b6 преди 6a320935fa4293e9e599ec9f85dc9eb3be7029f8
    • Linux Linux: 4.11; преди 4.11; 5.10.258 до 5.10.*; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.140 до 6.6.*; 6.12.86 до 6.12.*; 6.18.27 до 6.18.*; 7.0.4 до 7.0.*; 7.1 до *
    • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: V3.1.6 преди *
    • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP: V3.1.6 преди *
    • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: преди *
    • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: V3.1.6 преди *

    История

    • 27 май 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-46040: Linux | freedomonline.bg