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CVE-2021-4202

HIGH
7
CVSS Score
Published: March 25, 2022 at 06:02 PM UTC
Updated: June 17, 2026 at 04:19 AM UTC
2 products affected across 2 vendorsLinux KernelKernel

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Severity
HIGH7
Exploit prediction
EPSS 0.4%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
3.2 ≤ v < 4.4.2944.10 ≤ v < 4.14.2574.15 ≤ v < 4.19.2194.20 ≤ v < 5.4.1634.5 ≤ v < 4.9.2925.11 ≤ v < 5.15.55.5.0 ≤ v < 5.10.82
Affected range stops below 4.14.257, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.219, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.294, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.292, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.82, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.15.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.163, so it looks safe — our inference, not a vendor statement
Kernel· Red Hat
60%
kernel 5.16 rc2

References (8)

Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/06/01/2
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/06/04/2
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/06/07/2
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2036682
x_refsource_MISCExploitPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=3e3b5dfcd16a3e254aab61bd1e8c417dd4503102
x_refsource_MISCExploitPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=48b71a9e66c2eab60564b1b1c85f4928ed04e406
x_refsource_MISCExploitPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=86cdf8e38792545161dbe3350a7eced558ba4d15
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20220513-0002/

CVSS

7HIGH[email protected]
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362

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