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CVE-2026-97537: 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: scsi: qla2xxx: Fix queue teardown NULL dma_free and bitmap locking qla25xx_free_req_que() and qla25xx_free_rsp_que() have two pre-existing bugs exposed on the error path of qla25xx_create_{req,rsp}_que(): 1. When dma_alloc_coherent() fails during queue creation, the error path calls the free function with req->ring / rsp->ring still NULL (from kzalloc). The unconditional dma_free_coherent() with a NULL cpu_addr is undefined behavior and can panic. 2. The free functions clear req_qid_map / rsp_qid_map under vport_lock, but the create functions protect the same bitmaps with mq_lock. This provides no mutual exclusion. Additionally, the create error path clears the bit and releases mq_lock before calling the free function, creating a window where another thread can allocate the same que_id and have its ha->req_q_map entry clobbered by the subsequent lockless NULL assignment in the free function. Fix by: - Guarding dma_free_coherent() with a NULL check on the ring pointer. - Using mq_lock (the lock held by all creators) in the free functions to atomically NULL the map entry and clear the bitmap bit. - Removing the now-redundant clear_bit blocks from the create error paths since the free functions handle it atomically.

    Засегнати продукти

    • Linux Linux: 73208dfd7ab19f379d73e8a0fbf30f92c203e5e8 преди b65e3a82f77b7a63e386623d2ea70d2b5580295a; 73208dfd7ab19f379d73e8a0fbf30f92c203e5e8 преди a9ff85886425355c72749be6090758aa19a89f16; 73208dfd7ab19f379d73e8a0fbf30f92c203e5e8 преди 81ee4df2a488f0909f7ff563e88a0e0099485a8b; 73208dfd7ab19f379d73e8a0fbf30f92c203e5e8 преди 2e6f60adf609c77e828f64e0cd371920bef91c12; 73208dfd7ab19f379d73e8a0fbf30f92c203e5e8 преди 56e25d716833604fd5bff388e472f290bfe793aa; 73208dfd7ab19f379d73e8a0fbf30f92c203e5e8 преди f35cb67f2092b49d7949065dd56895ed47238f22; 73208dfd7ab19f379d73e8a0fbf30f92c203e5e8 преди 94fc0c5b45de2bf3a691619bcfd10b9a49fc647e; 73208dfd7ab19f379d73e8a0fbf30f92c203e5e8 преди 34a40e0dff940ac5eba494a69b553ea571e24873
    • Linux Linux: 2.6.29; преди 2.6.29; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.112 до 6.12.*; 6.18.53 до 6.18.*; 7.2.7 до 7.2.*; от 7.3 нататък

    История

    • 25 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-97537: Linux | freedomonline.bg