CVE-2022-48858 (GCVE-0-2022-48858)
Vulnerability from cvelistv5
Published
2024-07-16 12:25
Modified
2025-05-04 12:43
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix a race on command flush flow Fix a refcount use after free warning due to a race on command entry. Such race occurs when one of the commands releases its last refcount and frees its index and entry while another process running command flush flow takes refcount to this command entry. The process which handles commands flush may see this command as needed to be flushed if the other process released its refcount but didn't release the index yet. Fix it by adding the needed spin lock. It fixes the following warning trace: refcount_t: addition on 0; use-after-free. WARNING: CPU: 11 PID: 540311 at lib/refcount.c:25 refcount_warn_saturate+0x80/0xe0 ... RIP: 0010:refcount_warn_saturate+0x80/0xe0 ... Call Trace: <TASK> mlx5_cmd_trigger_completions+0x293/0x340 [mlx5_core] mlx5_cmd_flush+0x3a/0xf0 [mlx5_core] enter_error_state+0x44/0x80 [mlx5_core] mlx5_fw_fatal_reporter_err_work+0x37/0xe0 [mlx5_core] process_one_work+0x1be/0x390 worker_thread+0x4d/0x3d0 ? rescuer_thread+0x350/0x350 kthread+0x141/0x160 ? set_kthread_struct+0x40/0x40 ret_from_fork+0x1f/0x30 </TASK>
References
Impacted products
Vendor Product Version
Linux Linux Version: 073fff8102062cd675170ceb54d90da22fe7e668
Version: 50b2412b7e7862c5af0cbf4b10d93bc5c712d021
Version: 50b2412b7e7862c5af0cbf4b10d93bc5c712d021
Version: 50b2412b7e7862c5af0cbf4b10d93bc5c712d021
Version: 50b2412b7e7862c5af0cbf4b10d93bc5c712d021
Version: da87ea137373689dec9d3fafa34a57787320a4b3
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