CVE-2021-46973 - OpenCVE

In the Linux kernel, the following vulnerability has been resolved: net: qrtr: Avoid potential use after free in MHI send It is possible that the MHI ul_callback will be invoked immediately following the queueing of the skb for transmission, leading to the callback decrementing the refcount of the associated sk and freeing the skb. As such the dereference of skb and the increment of the sk refcount must happen before the skb is queued, to avoid the skb to be used after free and potentially the sk to drop its last refcount..

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Linux	Linux Kernel

No data.

No data.

References

Link	Providers
https://git.kernel.org/stable/c/03c649dee8b1eb5600212a249542a70f47a5ab40
https://git.kernel.org/stable/c/47a017f33943278570c072bc71681809b2567b3a
https://git.kernel.org/stable/c/48ec949ac979b4b42d740f67b6177797af834f80
https://git.kernel.org/stable/c/ea474054c2cc6e1284604b21361f475c7cc8c0a0
https://lore.kernel.org/linux-cve-announce/2024022721-CVE-2021-46973-20ce@gregkh/T/#u
https://nvd.nist.gov/vuln/detail/CVE-2021-46973
https://www.cve.org/CVERecord?id=CVE-2021-46973

History

Mon, 04 Nov 2024 13:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel:-:::::::*
Vendors & Products		Linux Linux linux Kernel
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-02-27T18:47:07.880Z

Updated: 2024-11-04T11:56:56.833Z

Reserved: 2024-02-27T18:42:55.944Z

Link: CVE-2021-46973

Vulnrichment

Updated: 2024-08-04T05:17:42.894Z

NVD

Status : Awaiting Analysis

Published: 2024-02-27T19:04:07.457

Modified: 2024-08-01T13:42:29.060

Link: CVE-2021-46973

Redhat

Severity : Moderate

Publid Date: 2024-02-27T00:00:00Z

Links: CVE-2021-46973 - Bugzilla

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