Към съдържанието
Търсене

CVE-2026-93795: Linux

Няма оценка

CVSS

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: fix leaks and online flag on radix_tree_insert failure When radix_tree_insert() fails in blkg_create(), the error path has two issues: 1. blkg->online is set to true unconditionally, even when the blkg was never fully inserted. Move the assignment inside the success block. 2. The error path calls blkg_put() without first calling percpu_ref_kill(). Because the refcount is still in percpu mode, percpu_ref_put() only does this_cpu_sub() without checking for zero, so blkg_release() is never triggered. This permanently leaks the blkg memory, its percpu iostat, policy data, the parent blkg reference, and the cgroup css reference — the latter preventing the cgroup from ever being destroyed. Fix by replacing blkg_put() with percpu_ref_kill(), matching the pattern used in blkg_destroy().

    Засегнати продукти

    • Linux Linux: 7fcf2b033b84e261dca283bc2911aaea4b07b525 преди 0f840db042caee9d2f3dcdcf97d6674f6e4c1e30; 7fcf2b033b84e261dca283bc2911aaea4b07b525 преди f53945d7c712efe63fadbcc5ffed6370871fd0d3; 7fcf2b033b84e261dca283bc2911aaea4b07b525 преди ada8270ccdb6f212da5eb22614c28ea418746a4a; 7fcf2b033b84e261dca283bc2911aaea4b07b525 преди c3650be82ef6e7af13b79b2d10a7363bdf54aa7f; 7fcf2b033b84e261dca283bc2911aaea4b07b525 преди 6e85f02d45b5977c0326a8d854c6db878aa6b34a; 7fcf2b033b84e261dca283bc2911aaea4b07b525 преди 4c0d150fb98ea40760611979f4e664c244b20966; 7fcf2b033b84e261dca283bc2911aaea4b07b525 преди dbbca20764382b4d411ec2918f4e278ffe547acc
    • Linux Linux: 5.0; преди 5.0; 5.10.271 до 5.10.*; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.111 до 6.12.*; 6.18.53 до 6.18.*; от 7.2 нататък

    История

    • 24 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници