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VULNERABILITIES

CVE-2021-46973 Details

Description

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..

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:8.4 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://git.kernel.org/stable/c/03c649dee8b1eb5600212a249542a70f47a5ab40 kernel.orgPatch
https://git.kernel.org/stable/c/47a017f33943278570c072bc71681809b2567b3a kernel.orgPatch
https://git.kernel.org/stable/c/48ec949ac979b4b42d740f67b6177797af834f80 kernel.orgPatch
https://git.kernel.org/stable/c/ea474054c2cc6e1284604b21361f475c7cc8c0a0 kernel.orgPatch
https://git.kernel.org/stable/c/03c649dee8b1eb5600212a249542a70f47a5ab40 CVEPatch

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-416Use After FreeCISA-ADP

Affected Products

ProductVersions
linux linux kernel
>= 5.8, <= 5.10.35
>= 5.11, <= 5.11.19
>= 5.12, <= 5.12.2

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

9 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-46973
NVD Published Date:
Feb 27, 2024
NVD Last Modified:
Aug 4, 2026
Source:
kernel.org
CVE-2021-46973 Details - Not Deferred