CVE-2021-4202

A use-after-free flaw was found in nci_request in net/nfc/nci/core.c in NFC Controller Interface (NCI) in the Linux kernel. This flaw could allow a local attacker with user privileges to cause a data race problem while the device is getting removed, leading to a privilege escalation problem.

CVSS v3.0 7.0 HIGH
CVSS v2.0 6.9 MEDIUM

7.0^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.0 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 3.4 / Impact : 10.0

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=86cdf8e38792545161dbe3350a7eced558ba4d15	Exploit Patch Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2036682	Issue Tracking Patch Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3e3b5dfcd16a3e254aab61bd1e8c417dd4503102	Exploit Patch Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=48b71a9e66c2eab60564b1b1c85f4928ed04e406	Exploit Patch Vendor Advisory
https://security.netapp.com/advisory/ntap-20220513-0002/	Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/06/01/2	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/06/04/2	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2022/06/07/2	Mailing List Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel:5.16:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.16:-::::::
	cpe:2.3:o:linux:linux_kernel::::::::

Information

Published : 2022-03-25 12:15

Updated : 2022-10-05 19:25

NVD link : CVE-2021-4202

Mitre link : CVE-2021-4202

JSON object : View

CWE

CWE-416

Use After Free

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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Products Affected

linux

linux_kernel

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