CVE - CVE-2022-48858

CVE-ID
CVE-2022-48858	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/0401bfb27a91d7bdd74b1635c1aae57cbb128da6 URL:https://git.kernel.org/stable/c/0401bfb27a91d7bdd74b1635c1aae57cbb128da6 MISC:https://git.kernel.org/stable/c/063bd355595428750803d8736a9bb7c8db67d42d URL:https://git.kernel.org/stable/c/063bd355595428750803d8736a9bb7c8db67d42d MISC:https://git.kernel.org/stable/c/1a4017926eeea56c7540cc41b42106746ee8a0ee URL:https://git.kernel.org/stable/c/1a4017926eeea56c7540cc41b42106746ee8a0ee MISC:https://git.kernel.org/stable/c/7c519f769f555ff7d9d4ccba3497bbb589df360a URL:https://git.kernel.org/stable/c/7c519f769f555ff7d9d4ccba3497bbb589df360a MISC:https://git.kernel.org/stable/c/f3331bc17449f15832c31823f27573f4c0e13e5f URL:https://git.kernel.org/stable/c/f3331bc17449f15832c31823f27573f4c0e13e5f
Assigning CNA
kernel.org
Date Record Created
20240716	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240716)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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