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CVE-2026-23419: Linux

7.5

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: net/rds: Fix circular locking dependency in rds_tcp_tune syzbot reported a circular locking dependency in rds_tcp_tune() where sk_net_refcnt_upgrade() is called while holding the socket lock: ====================================================== WARNING: possible circular locking dependency detected ====================================================== kworker/u10:8/15040 is trying to acquire lock: ffffffff8e9aaf80 (fs_reclaim){+.+.}-{0:0}, at: __kmalloc_cache_noprof+0x4b/0x6f0 but task is already holding lock: ffff88805a3c1ce0 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: rds_tcp_tune+0xd7/0x930 The issue occurs because sk_net_refcnt_upgrade() performs memory allocation (via get_net_track() -> ref_tracker_alloc()) while the socket lock is held, creating a circular dependency with fs_reclaim. Fix this by moving sk_net_refcnt_upgrade() outside the socket lock critical section. This is safe because the fields modified by the sk_net_refcnt_upgrade() call (sk_net_refcnt, ns_tracker) are not accessed by any concurrent code path at this point. v2: - Corrected fixes tag - check patch line wrap nits - ai commentary nits

    Засегнати продукти

    • Linux Linux: 3a58f13a881ed351198ffab4cf9953cf19d2ab3a преди ce5be6703afd2ac2ff7dabd397137d71d22d4bc3; 3a58f13a881ed351198ffab4cf9953cf19d2ab3a преди 8babb271403378ba6836f6c8599c5313d0e2355d; 3a58f13a881ed351198ffab4cf9953cf19d2ab3a преди 8519e6883a942e510f33a0e634e27bcc3a844a40; 3a58f13a881ed351198ffab4cf9953cf19d2ab3a преди 6ce948fa54599f369ff7fe8b793a6aae4b0762b2; 3a58f13a881ed351198ffab4cf9953cf19d2ab3a преди 026bbaeeab9e04534ee58882b6447300629b42f6; 3a58f13a881ed351198ffab4cf9953cf19d2ab3a преди 6a877ececd6daa002a9a0002cd0fbca6592a9244; 2a6efabed754c9dcf27e6def71317b374f58a852; 5.17.7 преди 5.18
    • Linux Linux: 5.18; преди 5.18; 6.1.191 до 6.1.*; 6.6.130 до 6.6.*; 6.12.77 до 6.12.*; 6.18.17 до 6.18.*; 6.19.7 до 6.19.*; 7.0 до *

    История

    • 3 април 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-23419: Linux | freedomonline.bg