CVE-2024-41053 (GCVE-0-2024-41053)
Vulnerability from cvelistv5
Published
2024-07-29 14:32
Modified
2026-05-23 15:51
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Fix ufshcd_abort_one racing issue When ufshcd_abort_one is racing with the completion ISR, the completed tag of the request's mq_hctx pointer will be set to NULL by ISR. Return success when request is completed by ISR because ufshcd_abort_one does not need to do anything. The racing flow is: Thread A ufshcd_err_handler step 1 ... ufshcd_abort_one ufshcd_try_to_abort_task ufshcd_cmd_inflight(true) step 3 ufshcd_mcq_req_to_hwq blk_mq_unique_tag rq->mq_hctx->queue_num step 5 Thread B ufs_mtk_mcq_intr(cq complete ISR) step 2 scsi_done ... __blk_mq_free_request rq->mq_hctx = NULL; step 4 Below is KE back trace. ufshcd_try_to_abort_task: cmd at tag 41 not pending in the device. ufshcd_try_to_abort_task: cmd at tag=41 is cleared. Aborting tag 41 / CDB 0x28 succeeded Unable to handle kernel NULL pointer dereference at virtual address 0000000000000194 pc : [0xffffffddd7a79bf8] blk_mq_unique_tag+0x8/0x14 lr : [0xffffffddd6155b84] ufshcd_mcq_req_to_hwq+0x1c/0x40 [ufs_mediatek_mod_ise] do_mem_abort+0x58/0x118 el1_abort+0x3c/0x5c el1h_64_sync_handler+0x54/0x90 el1h_64_sync+0x68/0x6c blk_mq_unique_tag+0x8/0x14 ufshcd_err_handler+0xae4/0xfa8 [ufs_mediatek_mod_ise] process_one_work+0x208/0x4fc worker_thread+0x228/0x438 kthread+0x104/0x1d4 ret_from_fork+0x10/0x20
References
Impacted products
Vendor Product Version
Linux Linux Version: ff7699d3620763b0dfe2ff93df4528880bf903a8
Version: 93e6c0e19d5bb12b49534a411c85e21d333731fa
Version: 93e6c0e19d5bb12b49534a411c85e21d333731fa
Version: 6.6.5   ≤
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: core: Fix ufshcd_abort_one racing issue\n\nWhen ufshcd_abort_one is racing with the completion ISR, the completed tag\nof the request\u0027s mq_hctx pointer will be set to NULL by ISR.  Return\nsuccess when request is completed by ISR because ufshcd_abort_one does not\nneed to do anything.\n\nThe racing flow is:\n\nThread A\nufshcd_err_handler\t\t\t\t\tstep 1\n\t...\n\tufshcd_abort_one\n\t\tufshcd_try_to_abort_task\n\t\t\tufshcd_cmd_inflight(true)\tstep 3\n\t\tufshcd_mcq_req_to_hwq\n\t\t\tblk_mq_unique_tag\n\t\t\t\trq-\u003emq_hctx-\u003equeue_num\tstep 5\n\nThread B\nufs_mtk_mcq_intr(cq complete ISR)\t\t\tstep 2\n\tscsi_done\n\t\t...\n\t\t__blk_mq_free_request\n\t\t\trq-\u003emq_hctx = NULL;\t\tstep 4\n\nBelow is KE back trace.\n  ufshcd_try_to_abort_task: cmd at tag 41 not pending in the device.\n  ufshcd_try_to_abort_task: cmd at tag=41 is cleared.\n  Aborting tag 41 / CDB 0x28 succeeded\n  Unable to handle kernel NULL pointer dereference at virtual address 0000000000000194\n  pc : [0xffffffddd7a79bf8] blk_mq_unique_tag+0x8/0x14\n  lr : [0xffffffddd6155b84] ufshcd_mcq_req_to_hwq+0x1c/0x40 [ufs_mediatek_mod_ise]\n   do_mem_abort+0x58/0x118\n   el1_abort+0x3c/0x5c\n   el1h_64_sync_handler+0x54/0x90\n   el1h_64_sync+0x68/0x6c\n   blk_mq_unique_tag+0x8/0x14\n   ufshcd_err_handler+0xae4/0xfa8 [ufs_mediatek_mod_ise]\n   process_one_work+0x208/0x4fc\n   worker_thread+0x228/0x438\n   kthread+0x104/0x1d4\n   ret_from_fork+0x10/0x20"
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