CVE-2021-47453 - Vulnerability Details - OpenCVE

In the Linux kernel, the following vulnerability has been resolved:

ice: Avoid crash from unnecessary IDA free

In the remove path, there is an attempt to free the aux_idx IDA whether
it was allocated or not. This can potentially cause a crash when
unloading the driver on systems that do not initialize support for RDMA.
But, this free cannot be gated by the status bit for RDMA, since it is
allocated if the driver detects support for RDMA at probe time, but the
driver can enter into a state where RDMA is not supported after the IDA
has been allocated at probe time and this would lead to a memory leak.

Initialize aux_idx to an invalid value and check for a valid value when
unloading to determine if an IDA free is necessary.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00025.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Linux	Linux Kernel

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products
Linux	Linux Kernel

References

Link	Providers
https://git.kernel.org/stable/c/73e30a62b19b9fbb4e6a3465c59da186630d5f2e
https://git.kernel.org/stable/c/777682e59840e24e6c5672197e6ffbcf4bff823b
https://lore.kernel.org/linux-cve-announce/2024052243-CVE-2021-47453-2f17@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47453
https://www.cve.org/CVERecord?id=CVE-2021-47453

History

Mon, 04 Nov 2024 12:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-22T06:19:43.374Z

Updated: 2025-05-04T07:11:15.700Z

Reserved: 2024-05-21T14:58:30.833Z

Link: CVE-2021-47453

Vulnrichment

Updated: 2024-08-04T05:39:59.466Z

NVD

Status : Awaiting Analysis

Published: 2024-05-22T07:15:10.380

Modified: 2024-11-21T06:36:10.650

Link: CVE-2021-47453

Redhat

Severity : Low

Publid Date: 2024-05-22T00:00:00Z

Links: CVE-2021-47453 - Bugzilla

OpenCVE Enrichment

Updated: 2025-07-12T22:15:48Z

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