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CVE-2026-68429: 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: drm/dp_mst: Handle torn-down topology gracefully in drm_dp_mst_topology_queue_probe() A hotplug or link-loss event can tear down the MST topology (setting mgr->mst_state = false and mgr->mst_primary = NULL) concurrently with a caller invoking drm_dp_mst_topology_queue_probe(). Since the check is already performed under mgr->lock, the condition is not a programming error but a valid race -- the topology was valid when the caller decided to call this function, but was torn down before the lock was acquired. Replace the drm_WARN_ON() with a graceful early return. This eliminates spurious kernel warnings and the resulting compositor crashes observed when connecting/disconnecting DP MST monitors, while keeping the correct behavior of doing nothing when MST is not active. A drm_dbg_mst() trace is added so the skipped probe remains observable under MST debug logging. The existing WARN_ON(mgr->mst_primary) in drm_dp_mst_topology_mgr_set_mst() already catches the case where the topology is initialized twice, so no diagnostic coverage is lost.

    Засегнати продукти

    • Linux Linux: 5f57a96e92c60f62da91d58ceb5e5acd40e7d594 преди b1d05cc61dfa6c4bd5e67855bec6a03e955f512d; dbaeef363ea54f4c18112874b77503c72ba60fec преди 4ed6d08c4a59ee6a8cb806347f6d9873de5d229e; dbaeef363ea54f4c18112874b77503c72ba60fec преди 8c6d84a54823cd839e6ce22af559925f1320c310; dbaeef363ea54f4c18112874b77503c72ba60fec преди afdff9103818656627920c21822e48a6dae2906f; dbaeef363ea54f4c18112874b77503c72ba60fec преди 613059875958e7b217b250ed14c3b189f9488421; 6.6.86 преди 6.6.148
    • Linux Linux: 6.12; преди 6.12; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

    История

    • 12 август 2026 Публикувано

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    Първоизточници

    CVE-2026-68429: Linux | freedomonline.bg